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Volume 60, Issue 8
Displaying 1-8 of 8 articles from this issue
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Preface
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[in Japanese]2014 Volume 60 Issue 8 Pages 467
Published: August 20, 2014
Released on J-STAGE: July 07, 2015
JOURNAL FREE ACCESSDownload PDF (394K)
Original article
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Kengo HASHIMOTO, Toru NAGAO, Terumi SAITO, Go TAKEUCHI, Yoshihiko AOKI ...2014 Volume 60 Issue 8 Pages 468-473
Published: August 20, 2014
Released on J-STAGE: July 07, 2015
JOURNAL FREE ACCESSMost cases of trigeminal neuralgias (TNs) are idiopathic, caused by neurovascular compression. However, up to 10% of TNs are symptomatic, caused by structural lesions such as brain tumors. Differential diagnosis of causative intracranial lesions, including neurovascular compression or brain tumors, is very important for TN management. We retrospectively reviewed 41 patients with TNs who underwent magnetic resonance imaging (MRI) and were treated in the Department of Oral and Maxillofacial Surgery, Okazaki City Hospital from January 2006 through January 2012. TNs caused by intracranial lesions developed in 17 of 41 patients (41.5%). All of these patients presented with typical TN symptoms, of which the underlying cause was neurovascular compression in 10 patients and brain tumors in 7 patients. Symptomatic TNs tended to occur in male and young patients, poorly respond to carbamazepine, and to be accompanied by another neurological symptom as compared with idiopathic TNs. The absence of significant clinical differences between the two TN types makes it difficult to distinguish them on the basis of clinical presentations alone. Even in patients presenting with typical TN symptoms, MRI was considered an essential examination for distinguishing TNs caused by neurovascular compression from those caused by structural lesions.View full abstractDownload PDF (590K)
Case reports
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Katsuhisa SEKIDO, Takashi SEKIGUCHI, Michiko OKITA, Yasushi HARIYA, Ma ...2014 Volume 60 Issue 8 Pages 474-478
Published: August 20, 2014
Released on J-STAGE: July 07, 2015
JOURNAL FREE ACCESSPeripheral odontogenic fibroma is a rare ectomesenchymal benign tumor arising in the gingiva. The histologic characteristics include scattered cords and nests of the inactive odontogenic epithelium, and varying amounts of calcification forming dentinoid, osteoid, cementum-like material in fibrous connective stroma.
A 54-year-old woman was referred to our clinic because of a gingival mass in the left posterior mandibular region. The clinical examination revealed a firm, smooth-surfaced painless mass, measuring 20 × 25 mm in diameter, at the attached gingiva. A panoramic X-ray film showed a well-defined radiolucent lesion with scattered radio-opacities. Under general anesthesia, the lesion was resected surgically with a 3-mm safety margin, including the periosteum abutting on the mass. Moreover, curettage and shaving of the cortical bone of the mandible adjacent to the mass were performed. The lesion was diagnosed as a peripheral odontogenic fibroma histopathologically. There has been no sign of recurrence for 22 months after surgical resection.View full abstractDownload PDF (782K) -
Koichiro KATO, Yoshiyuki MORIYA2014 Volume 60 Issue 8 Pages 479-483
Published: August 20, 2014
Released on J-STAGE: July 07, 2015
JOURNAL FREE ACCESSMucoepidermoid carcinoma is a malignant tumor that arises from the ductal epithelium of the salivary gland and is composed of mucus-producing cells, stratified squamous epithelium cells, and intermediate cells. Mucoepidermoid carcinoma commonly occurs in the parotid gland and the palatine gland. We report a case of mucoepidermoid carcinoma that formed a large cyst in the submandibular gland. The patient was a 73-year-old woman who had an elastic soft mass, measuring 70 × 30 mm, in the right submandibular region. The mass was clinically diagnosed as a tumor with a cystic lesion, and the tumor was excised under general anesthesia. The present case was histopathologically diagnosed as a low-grade malignant mucoepidermoid carcinoma. There has been no evidence of recurrence as of 3 years 6 months after the operation.View full abstractDownload PDF (756K) -
Yoshikazu HARADA, Akihiko MIYAWAKI, Satomi OTSU, Toshiyuki AKIMORI, So ...2014 Volume 60 Issue 8 Pages 484-489
Published: August 20, 2014
Released on J-STAGE: July 07, 2015
JOURNAL FREE ACCESSAn osteoid osteoma is a benign tumor. Its growth is limited, and the lesion size is generally less than 15 mm. This type of tumor arises most commonly in long bones of the lower limbs. It is extremely rare in the head and neck region, but relatively frequently develops in the cervical spine. Osteoid osteomas account for about 3 % of all bone tumors，and about 1 % of them arise in the jaw. This tumor occurs most frequently at the age of 20-29 years, and men are more frequently affected than women (man:woman ratio, 2-3:1). We report a patient with a mandibular osteoid osteoma.
A 28-year-old man visited our department because of haphalgesia in the lingual gingiva of the right mandibular first premolar. In this region, mild redness and a hard bone-like protrusion were observed, and marked haphalgesia was present. Computed tomography (CT) showed a well-delineated radiopaque area (about 2 mm) surrounded by a radiolucent band. After about a year, the swelling in this area increased, and spontaneous pain developed. CT revealed a lesion (about 7 mm in diameter) showing a mixture of radiolucent and radiopaque areas. The tumor was resected under general anesthesia, and an osteoid osteoma was diagnosed on the basis of clinical and histopathological findings. As of 1 year after surgery, there have been no definite findings suggesting recurrence, and we intend to perform further follow-up.View full abstractDownload PDF (1074K) -
Kouta SHIMOMATSU, Hiroshi HIJIOKA, Takayuki ISHIDA, Kazuhide MATSUNAGA ...2014 Volume 60 Issue 8 Pages 490-493
Published: August 20, 2014
Released on J-STAGE: July 07, 2015
JOURNAL FREE ACCESSAmong the anatomical elements of the face, the lips, especially the red border, have a unique morphology and color tone ; therefore, reconstruction of a lip defect is challenging from both functional as well as aesthetic viewpoints. We present a case of lower lip carcinoma in which reconstruction was performed using a lateral tongue flap based on the tongue dorsum with a good outcome.
The patient was a 72-year-old man who complained of a sore left lower lip. A biopsy revealed squamous cell carcinoma, and partial resection was performed. The resection range was about one third of the left side of the lower lip, including the orbicularis oris muscle and preserving the left corner of the mouth. After tumor resection, the left lateral margin of the tongue was reflected based on the dorsum of the tongue and mounted on the corresponding half of the existing lip border.
Three weeks after initial operation, the flap was surgically detached. Presently, 1 year has elapsed, and there has been no sign of recurrence; the color, shape, and lip-closure are good.
These findings suggested that reconstruction using a lateral tongue flap for the treatment of a defect primarily affecting the lower red lip and involving the muscle layer resulted in good blood flow and excellent morphological and functional recovery.View full abstractDownload PDF (1013K) -
Wataru KAKUGUCHI, Toyonori SUZUKI, Atsushi FUJITA, Kohei MATSUDA, Moto ...2014 Volume 60 Issue 8 Pages 494-498
Published: August 20, 2014
Released on J-STAGE: July 07, 2015
JOURNAL FREE ACCESSSunitinib, a multitargeted tyrosine kinase inhibitor that inhibits angiogenesis, improves progressionfree survival in advanced renal cell carcinoma, gastrointestinal stromal tumor, and pancreatic neuroendocrine tumor. Sunitinib triggers wound healing failure and osteonecrosis of the jaw because it inhibits not only angiogenesis, but also the functions of osteoblasts and osteoclasts. A 51-year-old man with a diagnosis of intraabdominal gastrointestinal stromal tumor was treated with sunitinib. He had his teeth extracted from the right and left sides of the upper jaw by a dental practitioner on the first day of the second cycle of sunitinib. He was referred to our hospital because of bone exposure in the sockets 26 days after teeth extraction. Examination revealed bone exposure in the right and left sides of the upper jaw. The patient had had no history of bisphosphonate or radiation therapy. During continuous treatment with sunitinib, he was followed up with washing the sockets and the mouth. The sockets were epithelialized within 105 days after teeth extraction. Our findings suggest that patients treated with sunitinib should be closely observed for wound healing failure after surgical treatment.View full abstractDownload PDF (691K) -
Hisashi OZAKI, Shigeo ISHIKAWA, Kazuyuki YUSA, Hirohiko TACHIBANA, Hir ...2014 Volume 60 Issue 8 Pages 499-503
Published: August 20, 2014
Released on J-STAGE: July 07, 2015
JOURNAL FREE ACCESSOsteoma is a benign tumor comprising mature bone tissue. It is classified as peripheral, central, or extraskeletal. Peripheral osteoma of the mandibular condyle is a rare entity. We report a case of peripheral osteoma arising in the left mandibular condyle. A 31-year-old man presented with progressive deviation of the chin and malocclusion. He was in good health with no history of facial trauma. After some examinations were performed, a clinical diagnosis of a benign bone tumor in the left mandibular condyle was made. A condylectomy was performed, and the postoperative course was uneventful. The histological diagnosis was peripheral osteoma. Four years after the operation, the occlusion and facial asymmetry remain substantially improved. No recurrence has occurred. This article includes a review of previously reported cases.View full abstractDownload PDF (953K)
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