Japanese Journal of Oral and Maxillofacial Surgery
Online ISSN : 2186-1579
Print ISSN : 0021-5163
ISSN-L : 0021-5163
Volume 47, Issue 3
Displaying 1-12 of 12 articles from this issue
  • comparison of diagnostic ability between conventional inspection and staining for detecting a range of oral dysplastic lesions
    Hiroshi KURITA, Takuya AZEGAMI, Shinobu UEHARA, Hiroo BABA, Kenji KURA ...
    2001 Volume 47 Issue 3 Pages 161-165
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    To investigate the diagnostic usefulness of vital staining with iodine solution (JG staining) in the oral cavity, we analyzed inter-examiner reliability and the results of examinations by either direct inspection or JG staining in detecting a range of oral dysplastic lesions. Color photographs of 21 oral dysplastic lesions obtained before and after JG staining were prepared for the study. Three oral surgeons with different clinical experience evaluated a range of lesions on photographs displayed at random, without any information about the lesions. The examination with JG staining showed a high intraclass correlation coefficient (ICC) of 0.90, as compared with 0.62 without staining. Comparative study of the results obtained by inspection and those obtained by JG staining showed that the lesions were usually overestimated by inspection alone. Under the conditions of this study, our results suggest that JG staining might be useful for the diagnosis of a range of dysplastic lesions. Our findings also suggested that lesions would be overestimated by inspection alone.
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  • Hiroaki YATA, Tetsuya YAJIMA, Masayuki SUZUKI, Yuichiro KUROIWA, Yoich ...
    2001 Volume 47 Issue 3 Pages 166-169
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Mucoepidermoid carcinoma arises from salivary gland excretory ducts and is characterized by squamous epithelioid cells, mucin-producing cells and intermediate-type cells. This tumor accounts for about 10% of salivary gland tumors, and frequently occurs in the parotid gland and minor salivary glands of the palate.
    We report a case of mucoepidermoid carcinoma presenting with atypical pathological features that was especially difficult to diagnose. A movable tumor, the size of the tip of the little finger, was found in the left side of the soft palate region of an 80-year-old man. There was no spontaneous pain or tenderness on palpation. The clinical diagnosis was a malignant tumor, and tumor resection was performed under general anesthesia on October 4, 1999. The histopathological findings showed that the tumor consisted of two parts, one comprised of squamous epithelioid cells arranged in an insular fashion in a mass of collagen fibers, and the other comprised of squamous epithelioid cells and relatively large oncocyte-like cells with acidophilic cytoplasm in an islet-type configuration among inflammatory cells. These tumor cells appeared to be undifferentiated, but the presence of squamous epithelioid cells and mucicarmine positive cells led to a diagnosis of mucoepidermoid carcinoma, poorly differentiated type.
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  • possible malignant transformation
    Yoshiaki ITOH, Takenori ISHIKAWA, Koichi IGAKI, Hidetoshi TOHMORI, Mut ...
    2001 Volume 47 Issue 3 Pages 170-173
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Malignant myoepithelioma (or myoepithelial carcinoma) is an uncommon malignant tumor newly adopted as a separate entity in the revised WHO classification of salivary gland tumors (1991).
    Two criteria must be satisfied for the diagnosis of malignant myoepithelioma: (1) its neoplastic cells must be myoepithelial in nature, and (2) the tumor must be clinically identified as malignant. Although these criteria seem obvious, it is often difficult to diagnose this tumor definitively. In general, a combination of morphologic, ultrastructural, and immunohistochemical investigations is required to demonstrate myoepithelial differentiation in this tumor, and cytologic features indicating infiltrative growth must be reviewed to assess malignant potential. Most malignant myoepitheliomas occur in the parotid gland, but metastases are uncommon. Of 36 reported cases, 10 originated in the minor salivary gland and, 7 had metastasized to distant sites. We describe two cases of malignant myoepithelioma in which clinical and histopathological findings suggest malignant transformation.
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  • Tadanobu SEKIWA, Tamotsu UEHARA, Hiroyuki UEHARA, Masahiko HONDA, Masa ...
    2001 Volume 47 Issue 3 Pages 174-177
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    This paper describes a case of Burkitt lymphoma involving the right side of the maxillary gingiva that was accompanied by bone marrow metastasis in a 2-year-7-month-old boy. Epstein-Barr virus (EBV) infection was suggested to be involved.
    On July 23, 1996, an exploratory excision was performed. A histopathologic diagnosis of malignant lymphoma was made. A computed tomographic scan revealed an extended tumor in the right maxillary deciduous molar region. A high signal field was noted bilaterally in the paranasal sinus on T 2-emphasized magnetic resonance images of the primary site. Ga and Tc scintillation scanning showed marked accumulation in the right temporal and left parietal regions, while systemic imaging showed abnormal accumulation in the right cranial, left parietal, and right iliac regions.
    The histopathologic diagnosis was malignant lymphoma, diffuse small non-cleaved (Burkitt), Stage IV.
    Chemotherapy was initiated on July 30. About 1 year after the initiation of therapy, not only the primary site but also the metastatic foci in the bone and bone marrow have disappeared.
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  • Tetsuro IWATA, Yumiko OHBAYASHI, Jitsuo NISHIHARA, Akihiro TANIZAKI, M ...
    2001 Volume 47 Issue 3 Pages 178-180
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Oncocytoma is a rate tumor that is epithelial in origin. Oncocytoma is histopathologically characterized by large “oncocytes” with eosinophilic granular cytoplasm. In the maxillofacial region, this tumor occurs in the minor or major salivary glands. Most oncocytomas occur in the parotid glands; oncocytomas occurring in the submandibular gland, palate, or buccal mucosa are rare.
    We report a case of oncocytoma arising in the submandibular gland of a 37-year-old woman. After surgical treatment, the condition of the patient was fairly good. There has been no recurrence after 2 years.
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  • Eiji YAGI, Hideki ICHIHARA, Makoto TOIDA, Hideki FUJITSUKA, Tadashi OK ...
    2001 Volume 47 Issue 3 Pages 181-184
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    A rare case of desmoplastic fibroma arising in the maxilla of a 20-year-old man is reported. He was referred to our department because of a swelling in the right cheek. CT imaging revealed a unilocular radiolucency in the right side of the maxilla. After antibiotic therapy for infection, surgical enucleation of the tumor with curettage of the surrounding bone was done under general anesthesia. The surgical specimen measured 25×25×20mm. Histopathologically, the tumor was composed of fibroblast-like cells with abundant collagenous fibers. There has been no evidence of local recurrence on 2 year follow-up.
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  • Kentaro HOSHI, Izumi ASAHINA, Daisuke TSUTSUI, Akimune KIKEGAWA, Shoji ...
    2001 Volume 47 Issue 3 Pages 185-187
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Cowden's disease is an autosomal dominant syndrome associated with diverse benign and malignant tumors. A rare case of Cowden's disease is reported. The patient was 64-year-old woman who was given a diagnosis of Cowden's disease by her physician. She complained of discomfort in the gingival mucosa and had a number of papules on the face, limbs, and gingiva. Pathological examination of the oral papules showed fibrous hyperplasia. We vaporized the papules on the gingiva with a KTP-laser. Gingival papillomatosis did not recur during follow-up. The patient was satisfied with the outcome of treatment.
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  • Hitoshi TANAKA, Kiyofumi FURUSAWA, Fuhito KOMATSU, Norimasa OKAFUJI, S ...
    2001 Volume 47 Issue 3 Pages 188-191
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Maxillary distraction osteogenesis is an important technique to treat maxillary hypoplasia. Recently, the novel technique of maxillary distraction with a rigid external distraction device (RED system) was proposed by Polley and Figueroa. This technique involves gradual advancement of the maxilla after Le Fort I osteotomy.
    We successfully treated an 18-year-old man who had maxillary deficiency with a hyperplastic mandible by both maxillary distraction and sagittal split ramus osteotomy. The maxillary incisors had been severely retroclined. The patient had bilateral cross-bite, a 20-mm anterior cross-bite, and class III molar occlusion.
    This report describes our treatment of the patient with the use of an external, adjustable, rigid distraction device.
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  • Tadafumi ADACHI, Yukiko KASHIMA, Juntaro NISHIO
    2001 Volume 47 Issue 3 Pages 192-195
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    This report describes a very rare case of multiple and multilocular dermoid and epidermoid cysts in the upper lip of a child. Under general anesthesia, exploratory extirpation was carried out via an oral approach. Histological examination revealed a large mass composed of a multilocular dermoid cyst and multiple epidermoid cysts. The dermoid cyst wall had a keratinized squamous epithelial lining extending over sebaceous glands and hair follicles.
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  • Yutaka KOBAYASHI, Hiroshi ASAI, Shoichiro TAKIMOTO, Hiroshi IWAKI, Ter ...
    2001 Volume 47 Issue 3 Pages 196-199
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    We describe a case of HIV infection in a patient with oral symptoms.
    A 55-year-old man visited the Department of Dentistry and Oral Surgery, Tokyo Metropolitan Hiroo General Hospital on October 24, 1998. because of discomfort in the tongue and oropharynx. The patient had white patches on the hard and soft palates and a hairy white lesion on the both borders of the tongue on initial oral examination. Clinically, oral candidiasis and hairy leukoplakia were suspected. On clinical examination, the CD 4 was 4.7%, the CD 4/CD 8 cell ratio was 0.10, and the Epstein-Barr virus antibody titer was 640 fold. HIV antibody was positive on both particle agglutination analysis and Western blot analysis. He received antimycosal drugs for candidiasis and was treated with AZT, 3 TC, and NFV for HIV infection at the department of internal medicine of our hospital. After 1 year, oral examination revealed no signs of oropharyngeal candidiasis or hairy leukoplakia on the borders of the tongue.
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  • Hironari KANEMURA, Junichi SATO, Hiroaki ISHII, Hideki SEKIYA, Yutaka ...
    2001 Volume 47 Issue 3 Pages 200-202
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Massive osteolysis is a rare disorder characterized by continuous and progressive resorption of bone. The first definitive report of massive osteolysis was made by Gorham and Stout in 1955. Subsequently, 23 cases involving the maxillofacial region have been reported. Most of the reported cases involve the mandible or both the mandible and maxilla. We describe our experience with our second case of massive osteolysis involving only the maxilla. This report describes this case and reviews the literature.
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  • Hisako HIKIJI, Tsuyoshi TAKATO, Tomoaki EGUCHI, Ken TOMIZUKA, Toshiyuk ...
    2001 Volume 47 Issue 3 Pages 203-205
    Published: March 20, 2001
    Released on J-STAGE: July 25, 2011
    JOURNAL FREE ACCESS
    Nasal deformity associated with cleft lip and palate is already obvious at birth. Primary nasal plasty is often performed at the same time as cheiloplasty. However, the influence of surgical intervention on growing alar cartilage remains unknown. Therefore, minimally invasive techniques should be used to correct nasal deformity. Presurgical orthopedic treatment using an oral molding plate has been employed traditionally for alveolar reconstruction in infants. We describe a female infant with left cleft lip and palate who underwent nonsurgical correction of nasal deformity before cheiloplasty, using a nasal stent attached to a Hotz-type palatal molding plate. This presurgical nasoalveolar molding was successful because immature cartilage in newborn infants is malleable enough to remodel the nasal shape. The nose of the patient maintains a correct form after cheiloplasty.
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