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A case of tonsillar extramedullary plasmacytoma in a 53-year-old man with a complaint of lump sensation in the throat is presented. Examination of the oral cavity showed enlargement of the left tonsil. Magnetic resonance imaging demonstrated a solid mass, measuring 3.2 x 2.0 x 3.8 cm, in the left tonsil. Cytologic smear obtained by fine-needle aspiration(More)
  • Yu Sakai
  • 2007
CASE A unique case of granulosa cell tumor arising in a müllerian cyst of the broad ligament in a 57-year-old woman is presented. The surgically resected unilocular cyst, measuring 9.5 x 9.5 x 6.5 cm3, situated within the right broad ligament. The inner surface of the cyst was lined by a single layer of ciliated columnar cells. Solid cell sheath of the(More)
Fingolimod is an oral, disease-modifying therapy used to treat multiple sclerosis (MS). 1 However, severe viral infections, including disseminated varicella-zoster virus infection, 1 herpes simplex encephalitis, 1,2 varicella-zoster virus encephalitis and vasculopathy, 3 or progressive multifocal leukoencephalopathy, 4 have been reported during fingolimod(More)
A case of chromophobe renal cell carcinoma (CRCC) with abundant hyalinized and edematous stroma mimicking oncocytoma is presented. This stromal architecture in the current case has not been reported on CRCC to our knowledge. A further interesting finding is entrapped non-neoplastic tubules in the hyalinized and edematous stroma composing the tumor. These(More)
AIMS To elucidate the pathogenesis of the anal fibroepithelial polyp, we examined surgically resected lesions histopathologically. METHODS AND RESULTS Twenty-seven surgically resected anal fibroepithelial polyps were investigated histologically with an additional immunohistochemical examination using anti-CD34. For a control study, the surgical specimens(More)
CASE REPORT We report a case of metastatic duodenal carcinoma simulating a primary ovarian mucinous tumor, occurring in a 53-year-old woman who had undergone pancreatoduodenectomy for duodenal adenocarcinoma approximately 18 months previously. The surgically removed bilateral ovaries revealed multicystic tumors. Histological examination showed they closely(More)
  • Yu Sakai
  • 2007
CASE REPORT An unusual case of epithelioid vascular leiomyoma mimicking glomangiomyoma arising in the uterine corpus of a 55-year-old Japanese woman is presented. The surgically resected uterine mass, measuring 4.0x3.5 cm2, demonstrated a dark red well-circumscribed tumor. Histologically, the rounded epithelioid cells around the dilated vessels showed(More)
CASE REPORT This report describes an unusual case of large cystic uterine adenomyoma in a 48-year-old woman. Under the clinical diagnosis of ovarian cancer, she underwent hysterectomy with bilateral salpingo-oophorectomy. Macroscopically, the large cystic mass containing bloody material was connected with the uterine isthmus and separate from both ovaries.(More)