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Department of Pathology and Laboratory Medicine

Department of Pathology and Laboratory Medicine

Residency Program - Case of the Month

January 2010 - Presented by Diane Sanders, M.D.

Clinical history:

The patient is an 80 year-old woman who presented with a three month history of multiple urinary tract infections and one day of gross hematuria. She had a 15 pack year history of smoking. A CT scan revealed a bladder wall tumor with no evidence of metastases. Cystoscopy demonstrated a golf ball sized, exophytic tumor embedded in the right dome and wall of the bladder. After evaluation of biopsies and a TURBT, a radical cystectomy with bilateral pelvic lymph node dissection was performed.

Gross description:

A 3.0 x 3.0 cm partially ulcerated and fungating tumor was identified covering the dome and posterior wall of the bladder. The tumor was 1.3 cm thick and grossly extended through the muscular wall, abutting overlying adipose tissue.

Microscopic photographs:

COTM Jan2010 Microscopic Image 1 COTM Jan2010 Microscopic Image 2 COTM Jan2010 Microscopic Image 3     

Immunohistochemical Stains:

Vimentin: Positive in sarcomatous areas
p63: Weakly positive
CK20: Negative
CK7: Positive in epithelial areas
Villin: Negative

Figure 1: Vimentin

COTM Jan2010 Immunohistochemical Stains: Vimentin 

Figure 2: CK7

COTM Jan2010 Immunohistochemical Stains: CK7

Figure 3: p63

COTM Jan2010 Immunohistochemical Stains: p63
        

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