Open AccessRENAL ONCOCYTOMA
Author(s) -
Akizuki Shin'ichiro,
Tanabe Katsuhiko,
Setoguchi Mihoko,
Yoshida Seiji,
Higuchi Yasunori,
Yamamoto Shunsuke
Publication year - 1986
Publication title -
acta patholigica japonica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 74
ISSN - 0001-6632
DOI - 10.1111/j.1440-1827.1986.tb02858.x
Subject(s) - renal oncocytoma , oncocytoma , pathology , medicine , immunohistochemistry
Up to date only five cases of renal oncocytomas have been reported in Japan. We describe two cases of renal oncocytomas. Case 1: A 63‐year‐old woman, who had no urological symptoms, was pointed out of a cystic mass in the left kidney by chance. A resected kidney had a cystic tumor, which was well encapsulated and measured 6 v 7 times 8 cm. The tumor was unilocular and thick‐walled cyst filled with bloody fluid. Histologically, the tumor was composed of oncocytes with eosinophilic granular cytoplasms that were packed with mitochondria. Case 2: A 70‐year‐old woman died of malignant lymphoma and an autopsy was performed. The tumor was found in the right kidney by chance and measured 1 cm in diameter. The cut‐surface of the tumor was uniform and tan‐brown in color. Histologically, the tumor was composed of cells same as Case 1. We discuss the incidence of this tumor and the morphological characteristics of our cases. ACTA PATHOL. JPN. 36: 1377 ‐1382, 1986.