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Volume 32, Issue 1
Displaying 1-29 of 29 articles from this issue
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[in Japanese]1990 Volume 32 Issue 1 Pages 1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSDownload PDF (118K) -
[in Japanese]1990 Volume 32 Issue 1 Pages 2
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSDownload PDF (116K) -
IT'S RELATION TO "HYPERPLASTIC POLYP" AND "POLYPOUS BUD"Michio MARUYAMA1990 Volume 32 Issue 1 Pages 3-10
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSStudies on “micro-elevation” of the gastric mucosa were reported. Under dissecting microscope, 53 “micro-elevations” were found in 55 resected stomachs which were stained by AH method. “Micro-elevation” showed sessile elevated appearance, 0.7-2.8 mm in diameter, composed of swelling finger-like processuses. “Micro-elevation” was mainly located on the fundic gland area or on the intermediate zone. Histological features of “micro-elevation” were similar to those of so-called “gastric hyperplastic polyp”. To analyze microvascular architectures of “micro-elevation” under dissecting microscope, Microphil was injected to the arteries of the 10 resected stomachs. Many dilatated and coiled capillaries were observed in the swollen finger-like processuses of “micro-elevations”, which might show red appearance under endoscopical observation. These microvascular structures were similar to those seen in the “gastric hyperplastic polyp”. Cell cycle analysis using BrdU revealed widening of the regenerative zone of the glands of the “micro-elevation” and S-phase endothelial cells of the capillaries, which suggested the growing potential of “micro-elevation”. This “micro-elevation” might be the same as what endoscopists call “polypous bud”, a small red spot observed on the gastric mucosa.View full abstractDownload PDF (6706K) -
Masahiro NAKAMURA1990 Volume 32 Issue 1 Pages 11-19
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSAnalysis of nuclear DNA content has recently added an important aspect in tumor biology and clinical diagnosis. We measured DNA content of gastric cancer cells obtained from endoscopically biopsied specimens and resected stomachs. Ploidy pattern and DNA content analysis were done by FAGS analyzer. No difference was found in the DNA content histogram between biopsied materials and surgically obtained ones. DNA index B (cancer cells/lymphocytes) was found to be significantly higher than DNA index A (normal gastric cells/lymphocytes). DNA index B and DNA index C (cancer cells/normal gastric cells) were significantly correlated (r=0.636). Aneuploidies were found at 73% of gastric cancers, 50% of atypical epithelium, and 55% of intestinal metaplasia. Incidence of aneuploidy and DNA index were found to be higher in advanced gastric cancers than early cancers, and they were also high in well differenciated types. The presence of aneuploidy was correlated fairly well with evidence of progression of tumor, such as invasion into deeper layer in the gastric wall, vessel invasion, and lymphatic invasion.View full abstractDownload PDF (1175K) -
-HIGH RISK OF GASTRIC CANCER-Ken HARUMA, Koji SUMII, Hidekazu OGASAWARA, Manabu KIMURA, Akihiko MOR ...1990 Volume 32 Issue 1 Pages 20-28_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSTo assess the state of the gastric mucosa in patients with gastric adenoma, determina tion of gastric acid secretion, serum gastrin levels, and serum pepsinogen I (PGI) levels were investigated in 54 patients with gastric adenoma and 93 controls (more than 60 years) who had no gastric lesion. Gastric acid secretion and serum PGI levels were significantly lower in the patients with gastric adenoma than in controls . As to serum gastrin levels, there was no significant difference between the two groups. Moreover, a follow-up study was endoscopically performed from 4 months to 128 months (mean 41 months) in 61 patients with gastric adenoma. Gastric cancer developed in 8 patients and gastric adenoma in 1 patient at the another region of the stomach. These results indicate the high risk of development of gastric cancer of the intestinal type in patients with gastric adenoma. In addition, based on the study of serum PGI levels in those with gastric adenoma, it is suggested that a low serum PGI level is a predictive factor of gastric cancer as well as a subclinical marker of atrophic gastritis.View full abstractDownload PDF (4045K) -
Satoshi EBISUI, Katsuhisa KAWAMOTO, Shouji MITSUFUJI, Yoshihide TATSUM ...1990 Volume 32 Issue 1 Pages 29-34_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSThe purpose of this paper was to evaluate usefulness of EUS for pancreatic cystic lesions. EUS was performed to have further evaluation in 16 cases of pancreatic cystic lesions. Of them, 7 cases were surgically treated and the histological diagnosis was made. In these 7 cases (2 cases, pseudocyst and 5 cases, true cyst), we compared the sonographic findings of EUS with those of US. The images of the cyst wall, septum and inhalt on EUS were more clear than those on abdominal US. The images of the pancreatic cystic lesions obtained by EUS were almost consistent with their pathological findings. A mixture of hypoechoic and echogenic areas, papillary protrusion and diffuse fine granular echoes were considered to correspond to honeycomb or spondy appearance tissue, tumor tissue and inhalt of mucous containing cysts, respectively.View full abstractDownload PDF (4121K) -
Haruhiro INOUE, Mitsuo ENDO, Kimiya TAKESITA, Tatsuyuki KAWANO, Kunihi ...1990 Volume 32 Issue 1 Pages 37-42_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSPreoperative assessment of early esophageal cancer has been established mainly by evaluation of endoscopic and endoscopic ultrasonographic findings. It is necessary to devise so called large particle biopsy of the esophagus for accurate pathological diagnosis of the uncolored portion under the Lugol staining method and for a therapeutic approach to mucosal lesion of the esophagus. We deviced a new method of endoscopic esophageal mucosal resection using a trans-parent tube (EMRT). Thirty-seven specimens from 7 dogs were evaluated in relation to size of the resected specimens and histological depth of the artificial ulcer. As a result, resected specimens with size less than 10mm in the longitudinal axis were related to histological depth of the submucosal layer on single cautery of EMRT. With specimens up to this size, single cautery of EMRT is safely performed without the risk of perforation. Moreover, repeated cauteries of EMRT made extensive mucosal resection possible (extensive EMRT) in dogs. Using this technique, any amount and any part of esophageal mucosa can be resected. The recovery pattern of the artificial ulcer and the long-term complications of extensive esophageal mucosal resection remain to be clarified.View full abstractDownload PDF (6088K) -
Haruhiro INOUE, Hiroshi NAKAMURA, Tatsuyuki KAWANO, Naoya MURASE, Nari ...1990 Volume 32 Issue 1 Pages 43-51
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSEndoscopic injection sclerotherapy (EIS) has used widespreadly and a transparent overtube devised by Kitano made EIS much easier with its clear visual field. We devised a new small-sized transparent tube for EIS under negative pressure control. This smallsized tube (16mm in outer diameter) has a valve making the inside of the tube airtight without a balloon on fiberscope. With this method the rate of accurate intravariceal injection reaches 77%, and no patient had severe pain of throat during EIS. As a result, we confirmed that EIS under negative pressure control using this apparatus will have to be a standard method of intravariceal injection techniques.View full abstractDownload PDF (7010K) -
Toshihiro YOKOTA, Toru MITSUSHIMA, Kazuya NAKAMOTO, Keiji YOKOUCHI, Yo ...1990 Volume 32 Issue 1 Pages 52-59_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSThe removal of stones using percutaneous transhepatic cholangioscopy (PTCS) was performed in 38 patients with the stones in gall bladder or bile trees. All patients had been evaluated to bear high risk to laparotomy. Complete or partial removal of the stones was succeeded in 28 patients (68.4%) by the endoscopy alone. In 6 patients (15.8%), cholecystectomy was performed after the removal of stones in the common bile duct or intrahepatic bile trees using PTCS. Following six cases were unsuccessful by the endoscopy alone. Two cases (5.3%) were treated surgically after failing the stone removal with PTCS. Emergency operation was done in one cases (2.6%) due to leakage of the ventral biliary fistura. Three patients (7.9%) were laid under observation after failure of the endoscopical removal. Our results indicates that, PTCS is the safe and useful method for the removal of stones of patients who are too risky to undergo laparotomy although there were some unsuccessful cases.View full abstractDownload PDF (4183K) -
Iruru MAETANI, Masahiko AKIYA, Shigeki OHASHI, Shitiroku WATANABE, Hid ...1990 Volume 32 Issue 1 Pages 60-66
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSIn a period of last 7 years, 59 of 185 cases with colitis had linear ulcer and redness. Of these, 49 cases of ischmic colitis (IC) or acute hemorrhagic colitis (AHC) were studied endoscopically and pathologically. We deviled AHC into 2 groups; the one group (D+) taking some drugs, especially antibiotics and the other (D-) not taking any drugs. There were 26 cases of D+, 9 cases of D-, and 14 cases of IC. Most of IC had ulcers and necrotic mucosa which endoscopically showed the most severe findings among these 3 groups. But in some cases of D+ group endoscopic findings were very similar to those of IC. The biopsied specimen taken within 3 days after the onset of colitis were examined in 27 cases. Degeneration of glands and goblet cell depletion of the mucosa were recognized in 70% of IC, while those were recognized in 58% even in D +. Therefore, the differential diagnosis between IC and D+ seems often difficult not only endoscopically but also pathologically. It was suggested that AHC after taking medicine would be induced by ischemia as well as IC.View full abstractDownload PDF (785K) -
Kiyonori KOBAYASHI, Tomoe KATSUMATA, Yoshiharu KIKUTI, Hiroyuki MITOMI ...1990 Volume 32 Issue 1 Pages 67-73_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSTwelve cases of endoscopically detected rectal carcinoid tumor were studied clinicopathologically in order to evaluate the effectiveness of endoscopic polypectomy. The results were as follows. 1) Most of the tumors (75%) were macroscopically sessile. Smooth and yellowish surface was typically observed. 2) The size of the tumors in 9 cases were less than 10mm in diameter. Invasion was limited to the submucosal layer in 10 cases, and spreaded to the proper musculal layer in other 2 cases. Small sized tumor (less than l0mm in diameter) with proper muscle or muscular invasion and/or distant metastasis was not be seen in our cases. 3) Four cases were treated by endoscopic polypectomy and the other 8 cases were treated surgically. In the Japanese reports, 39 cases of the rectal carcinoid were treated by endoscopic polypectomy. Tumor size of 31 cases (79%) were less than l0mm in diameter. In 6 cases, however, additional surgical treatments were needed, because the tumors were shown at the resected margin. But only 1 case of residual tumor was reported. In conclusion, endoscopic polypectomy is useful therapeutic method for small sized rectal carcinoid tumor (less than 10mm in diameter).View full abstractDownload PDF (3041K) -
-REPORT OF A CASE-Miho OKAMOTO, Yoshimi SHIBATA, Hiroshi KUROKAWA, Shuji OKUYAMA, Seiich ...1990 Volume 32 Issue 1 Pages 74-81
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSThe patient was 63 year-old male who had triple cancers of the esophagus, stomach and colon simultaneously. The histological diagnosis of the esophageal tumor was squamous cell carcinoma, and those of stomach and colon were adenocarcinoma. Accord ing to the definition of Warren and Gates, we considered this case as the synchronous triple cancers. Surgical resection was performed and three cancers were resectable at one time. Unfortunately, the patient died at the 60th day after the operation. We reviewed 7 cases of the triple cancers with esophageal cancer, gastric cancer and colon cancer reported in Japanese literatures (including our case). The number of patients with multiple primary cancers is increasing. The present case suggested that we should carefully follow up the patients with malignant tumors, considering the possibility of the multiple cancers.View full abstractDownload PDF (5600K) -
-REPORT OF A CASE AND REVIEW OF THE JAPANESE LITERATURE-Tomoyuki NOMURA, Yoshimasa KONDOH, Atsuki KAGOHASHI, Toyoaki MATSUSHIT ...1990 Volume 32 Issue 1 Pages 82-92_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSA 52-year old female was admitted to our hospital, because of abnormal findings on an upper Gl series roentgenography for gastric cancer. Roentgenography and endoscopy showed a pedunculated polyp incarcerating into the duodenal bulb from the middle body and several small elevated lesions at the middle and upper body of the stomach. Endoscopic polypectomy was performed for the pedunculated polyp. Specimens of resected polyp and biopsy from small elevated lesions were histologically carcinoid tumors. Total gastrectomy was done. Preoperative laboratory findings showed hypergastrinemia and anacidity and were positive for anti-parietal cell antibodies. Serum level of gastrin taken from a vein of the antrum during the operation was very high. Histopathological findings revealed that G-cells in the antrum were hyperplastic, and the fundic glands were atrophic. Hyperplasia of enterochromaffin-like cell, endocrine cell micronests and many micro carcinoid tumors were histopathologically observed in the corpus. This case may indicate to elucidate the development of carcinoid tumor. We also reviewed the literature on multiple gastric carcinoid tumors in Japan.View full abstractDownload PDF (6604K) -
(=GAVE) ACCOMPANIED WITH PERNICOUS ANEMIAMitsuru KAISE, Shigeyuki TANAKA, Akifumi SUZUKI, Yoshitaka KOBAYASHI, ...1990 Volume 32 Issue 1 Pages 93-99
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSA 82 year-old female was admitted because of severe anemia. She has been suffered from aortic stenosis and chronic liver dysfunction. Macrocytic anemia was found with decreased value of serum Vit. B 12 and positive anti-intrinstic factor antibody. Endoscopic congo-red test disclosed achlorhydria. In addition, hypergastrinemia (12, 800 pg/ml), which was not responsive to secretin test, was noted. Marked diffuse vascular ectasia in the antrum of the stomach was found on endospy. Biopsy specimens taken from those areas showed numerous small dilated vessels in the proper mucosal layer, of which findings were compatible with GAVE. The patient was conservatively treated due to aging and multiple risk factors. After continuing massive transfusion for a long time, she had died of multiple organ failure. Fifty cases of GAVE have been reported as far as we know. In Japan, only 2 cases have been reported including our case, Aged female was predominant in GAVE. Mean age was 68.4 years and male-female ratio was 1 to 4. Many cases of GAVE also have achlorhydria (18 cases in 19 evaluated cases) and liver cirrhosis (14 cases in 50 cases). Several cases have aortic stenosis, PSS, and chronic renal failure, respectively. It was known that those diseases can induce vascular ectasia of the gastrointestinal tract. We discussed on the pathogenesis for the developing of GAVE, including its relation to achlorhydria.View full abstractDownload PDF (4071K) -
Hiroshi SAKAUE, Shigetaka MIKI, Yuji MIZUKAMI, Yasushi HOSOKAWA, Shogo ...1990 Volume 32 Issue 1 Pages 100-104_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSThe patient was a 59-year-old male who came to the hospital with diarrhea. Polyposis of the stomach and colon, cutaneous pigmentation, alopecia, deformity of finger nails and severe hypoproteinemia were observed. When local fibrinolysis in biopsy tissue collected under endoscopy was measured by the fibrin plate method, high concentration of fi-brinolytic activity was observed in both the gastric and colonic mucosa. In addition to nutritional supplements, 600mg/day of camostat mesilate orally and 500mg/day of tranex-amic acid intravenously were administered concomitantly. About 3 months later, the subjective symptoms and hypoproteinemia had improved, and the gastric and colonic polyposis disappeared after 4-6 months. The fibrinolytic activity decreased as the clinical symptoms improved, and changed in parallel with the clinical course. In cases of this syndrome reported in Japan up to now, antiplasmin therapy was performed on 12 cases. Eight of them were improved or cured, and the treatment was ineffective in four cases. There have been almost no studies concerning the fibrinolytic activity of the gastrointestinal mucosa, and this case provided many suggestions concern-ing the mechanism of protein loss into the digestive tract and the treatment of this syndrome.View full abstractDownload PDF (4114K) -
Hirosato OHTA, Chiyuki CHUJOH, Toshihiro YAMANAKA, Hiroshi ENDOH, Tats ...1990 Volume 32 Issue 1 Pages 105-108_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSA 77-year-old man was admitted to our hospital on October 12, 1987 because of hematemesis. Endoscopical examination showed multiple acute ulcers in the body of the stomach. These lesions were considered to occur due to the previous oral administration of an anti-inflamatory drug for treatment of neuralgia. Moreover, endoscopical examina-tion on the next day of his hospitalization showed a small fold-like lesion with redness in the antrum. He was treated medically and discharged from hospital in two weeks. On November 18, 1987, endoscopical examination showed that the ulcers healed to scars but a cancerous lesion of IIa+IIc type was located in the antrum. On December 9, 1989, endoscopical examination showed the cancer extremely grown in size and height of the protrusion and in depth of central depression. Operative resection was performed and it turned out to be a IIa+IIc type early cancer with submucosal invasion and intraepitherial multiple cysts, histologically moderately differentiated adenocarcinoma. This case showing rapid growth of cancer in only two months may give us many suggestions in the study on cancer development.View full abstractDownload PDF (4265K) -
-LAPAROSCOPIC OBSERVATION OF HEPATIC LESION-[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...1990 Volume 32 Issue 1 Pages 109-114_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSA case of Toxocariasis Cati was presented. A 65-year-old male was referred to our hospital because of appetitelos, general fatigue and low grade fever. He had lived in Akita prefecture and had a habit of eating a raw liver of chicken. The main abnormal laboratory data were leucocytosis (22, 000/mm3) with eosinophilia (70.5%), hypergammerglobulinemia (IgE 7, 500 u/ml) and mild hepatic damage. Hepatoscintigraphy showed multiple defects in the liver. On laparoscopy, some yellow nodules were scattered on an irregular surface of the liver. Histologically, the hepatic specimen revealed focal necrosis, inflammatory changes and eosinophilic granulomas. The diagnosis was confirmed by an immunoelectro-phoresis technique, because the serum reacted strongly with antigen of Toxocara Cati. Accordingly, thiabendazole was prescribed. Then, the abnormal laboratory data were improved and his complaints disappeared. The repeated liver biopsy showed that eosino-philic infiltration and granumatous changes were minimized. This case was the sixth report of Toxocariasis Cati and the second having laparo-scopic observation, according to the available Japanese literatures.View full abstractDownload PDF (4843K) -
Kiyoshi UCHIDA, Shingo ITO, Hitoshi YAMAMOTO, Toshihiro KONAGAYA, Kouj ...1990 Volume 32 Issue 1 Pages 115-124_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSA case of pleomorphic carcinoma of the pancreas associated with intradiverticular bleeding of the duodenum was reported. A 72-year-old male was admitted to Shizuoka Saiseikai General Hospital complaining of melena in October, 1988. Emergency endoscopic findings revealed the fresh bleeding from the duodenal diverticulum. Ultrasonography and CT showed that a heterogenous tumor was 4 x 4cm in size in the pancreas head in association with marked dilatation of the main pancreatic duct. Selective angiography showed a hypervascular tumor of the pancreas head and mild encasement of the anterior superior pancreaticoduodenal artery. Hemorrhagic erosions at the bottom of the diver-ticulum was observed by following endoscopy. Histopathological finding of biopsy speci-mens was suspected leiomyosarcoma. Pancreaticoduodenectomy was performed and the resected specimen showed the marked hemorrhage and necrosis in the tumor. Histological-ly, the tumor invaded the duodenal diverticulum, and it was composed of atypical spindle cells, multi-nucleated giant cells and tubular adenocarcinoma cells. Among 15 cases of pleomorphic carcinoma of the pancreas in Japan, only this case was associated with complication of bleeding in the duodenal diverticulum.View full abstractDownload PDF (8888K) -
Mitsuru SAKA, Shigeaki ONO, Yoshitaka HIRAHARA, Masaki KUROSAWA, Yoshi ...1990 Volume 32 Issue 1 Pages 125-130_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSA 73-year-old man complained of right lower abdominal discomfort and positive tests for occult blood. First colonoscopic examination demonstrated a polypoid lesion at transverse colon and fresh blood at cecum. Bleeding point was not identified. Superior mesenteric arteriography demonstrated the dilated, tortuous vessels at ileocolic arterial region. Second colonoscopic examination showed five lesions with the slightly elevated cherry red spots at cecum. Based on these findings, these lesions were diagnosed as angiodysplasia of the colon. Angiodisplasia of the colon is recognized as a clinical entity and reported widely in Europe and United States, but rare in Japan. This disease usually occurs in the aged people who have often cardiac and/or pul-monar complications, therefore, greater need for colonoscopic therapy, instead of opera-tion, is required for this disease.View full abstractDownload PDF (3682K) -
WITH SPECIAL REFERENCE TO GROWTH OF THE COLORECTAL CANCERTsukasa YOSHIDA, Shiro TOMITA, Yoshiaki KAKIZAKI, Seiji ITO, Masafumi ...1990 Volume 32 Issue 1 Pages 133-141
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSThree cases of superficial depressed type colorectal carcinoma including one minute carcinoma were reported. Colonoscopic findings revealed as follows. Case 1: flat eryth-ematous lesion with slightly central depression in the sigmoid colon. Case 2 : pale and flat elevated lesion towards central depression in the rectum. Case 3 : reddish and flat elevated lesion with central depression in the sigmoid colon. The resected specimens of three cases, however, revealed depressed lesion without elevation. The sizes of three cases were 6 × 2 mm, 3 × 1 mm and 9 × 7 mm in diameter. Histopathological findings of three lesions were well differentiated adenocarcinoma confined to the depressed portion. Mural invasion was submucosa in case 1 and mucosa in case 2 and 3. All of them were clinically considered as de novo carcinoma.View full abstractDownload PDF (8088K) -
Kenji KITAHARA, Kenzaburou IMAMURA, Kazuhiro MAEDA, Mitsuo OKADA, Tsun ...1990 Volume 32 Issue 1 Pages 142-147
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSA case of acute hemorrhagic rectal ulcer without rectal massive bleeding is reported. A patient, 85 years old female, was admitted to our hospital because of anal pain and diarrhea. Sigmoidoscopy showed multiple geographical and round ulcers which were localized to the terminal rectum just proximal to the dentate line. The endoscopic findings were very similar to those of acute hemorrhagic rectal ulcer. However, the patient had no rectal bleeding during the clinical course. As the general condition of the patient became better, rectal ulcer was almost scarred.View full abstractDownload PDF (2802K) -
Koichi YASUTAKE, Yukio YOSHIMURA, Yoshimichi IMAMURA, Manabu OYA, Kenj ...1990 Volume 32 Issue 1 Pages 149-153_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSIn terms of specifications and performances, zooming video-endoscope GIF-V 10 Z is characterized by inserting a variably magnified lens between the objective and CCD so as to zoom continuously. We have recently used this endoscope in 47 cases, one of which failed in swallowing the endoscope probably due to long tip. The remaining 46 cases were observed for the following organs: esophagus (2 lesions), stomach (48 lesions), and duodenum (8 lesions). This apparatus is considered to be useful in image analysis because of its good resolving power in spite of lower magnification compared to the conventional high magnifiable endoscopes. Although it also has the demerits of forward-viewing, it is thought to have made a step toward ideal endoscope in view of ideal magnified observation by zooming type. Following should be improved 1) making magnification ratio higher than that of the present one, while making the length of tip shorter. 2) the viewing system can be (method of view is able to be) changed from lateral-to forward-view continuously. Once those problems are solved, this apparatus will become an ideal magnifiable endoscope.View full abstractDownload PDF (4040K) -
Tosiyuki HAYASI, Sigeru SUZUKI, Takesi TAKASAKI, Masayuki NAKAGAWA, Ko ...1990 Volume 32 Issue 1 Pages 154-158_1
Published: January 20, 1990
Released on J-STAGE: May 09, 2011
JOURNAL FREE ACCESSImage diagnosis has recently developed and been possible easily to make the preoper ative diagnosis of tumor thrombus in the inferior vena cava. But the clinical trial for direct observation of tumor thrombus itself has not been done. Recently a fiberscope (CHF-P10) covered with a balloon on its tip was inserted into inferior vena cava, and observed directly tumor thrombus. In two of three cases (renal cell carcinoma and cholangiocefular carcinoma), the tumor thrombus protruding from renal vein or hepatic vein and floating into the inferior vena cava could be clearly observed. In another case (hepatocellular carcinoma), although tumor thrombus had already disappeared, there was an anomaly of left-sided inferior vena cava with intravascular anomalous septum.View full abstractDownload PDF (6697K) -
1990 Volume 32 Issue 1 Pages 161-202
Published: January 20, 1990
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1990 Volume 32 Issue 1 Pages 202-220
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1990 Volume 32 Issue 1 Pages 220-240
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1990 Volume 32 Issue 1 Pages 240-246
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1990 Volume 32 Issue 1 Pages 246-255
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1990 Volume 32 Issue 1 Pages 256-289
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