Infected giant right seminal vesicle epidermoid cyst in young male patient with ipsilateral solitary kidney: Case report

Abstract

This case report presents a young male patient with a 3-month history of a rapidly growing lower abdominal mass associated with lower urinary tract symptoms and recurrent urinary tract infection. Pelvic magnetic resonance imaging showed a large congenital cyst in the right seminal vesicle having a mass effect on the urinary bladder, rectum, and left ureter. Histopathologic findings from exploratory laparotomy showed an epidermal inclusion cyst with secondary inflammation and suppuration. This report adds to the literature by describing this unique location of an epidermoid cyst within the seminal vesicle.

Keywords: Case report; Epidermal inclusion cyst; Epidermoid cyst; Seminal vesicle.

Fig. 1

Computed tomography urography (a, b, and c) shows no ipsilateral renal parenchyma. Computed tomography urography and Pelvic magnetic resonance imaging (Red Arrow) (a, b, and d) show a homogeneous giant cystic mass, posterior to the urinary bladder and prostate. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)

Fig. 2

Epidermal inclusion cyst with secondary inflammation and suppuration on low-power microscopy (hematoxylin and eosin stain). (A, B) The cyst wall is lined with stratified squamous epithelium with no evidence of adnexal structure consistent with the epidermoid cyst (white arrow) with the inner wall showing a granular layer (white arrowhead). (B, C) The central lumen contains laminated keratin accumulation (black arrow) and skeletal muscle and fibrous tissue are seen below the cyst lining (black arrowhead).