Endometrioid carcinoma of the fallopian tube: a clinicopathologic analysis of 26 cases

Gynecologic Oncology
S S NavaniR E Scully

Abstract

Twenty-six endometrioid adenocarcinomas of the fallopian tube that occurred in patients 37 to 85 (average 57) years of age are described. Most of the patients presented with symptoms related to a pelvic mass but nine tumors were incidental findings at the time of operation. All the neoplasms were unilateral. Eighteen tumors were Stage I, four Stage II, two Stage III, and two Stage IV. Two tumors were primary in the fimbriated end of the tube. On gross examination the typical appearance was that of a fusiform swelling of the tube which contained a predominantly intraluminal neoplasm up to 6 cm in greatest dimension. Six separate tumors were present in one case. Microscopic examination revealed that 14 tumors were typical endometrioid carcinomas with foci of squamous differentiation in 7 cases, spindle cells interpreted as epithelial cells in 4 cases, and a trabecular pattern in 1 case. One of these 14 tumors was composed almost exclusively of oxyphilic cells lining glands. Twelve tumors were characterized by a mostly solid proliferation of small closely packed cells punctured by numerous glands that varied from small to cystic, imparting a superficial resemblance to an adnexal tumor of probable Wolffian origin. Benign stromal os...Continue Reading

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