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Open Access Case Report

Polypoid nodular histiocytic hyperplasia associated with endometrioid adenocarcinoma of the endometrium: report of a case

Shabnam Akhter, W Dwayne Lawrence and M Ruhul Quddus*

Author Affiliations

Department of Pathology and Laboratory Medicine, Women & Infants Hospital, Alpert Medical School of Brown University, 101 Dudley Street, Providence, Rhode Island 02905, USA

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Diagnostic Pathology 2014, 9:93  doi:10.1186/1746-1596-9-93

Published: 12 May 2014

Abstract

A 45 year old woman underwent Laparoscopy-assisted total hysterectomy with staging procedure following a diagnosis of endometrial endometrioid adenocarcinoma on her endometrial biopsy. The hysterectomy specimen showed a FIGO I stage 1a, endometrioid carcinoma. A separate polypoid lesion in the endometrium, distinct from the carcinoma, was also identified. Microscopically the polypoid lesion was “nodular histiocytic hyperplasia”. The H&E, immunohistochemical staining findings and the differential diagnoses are discussed in this report. Although description of similar lesions is available in the literature, the current lesion is unique as it is identified in a hysterectomy specimen in its entirety and its association with an endometrial endometrioid carcinoma.

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Keywords:
Endometrium; Nodular histiocytic hyperplasia; Endometrioid carcinoma