Course Map: Metastatic Tumors and Second Extensions

Metastatic Tumors and Second Extensions
In general, tumors that present initially in the bladder are primary in the bladder. There are exceptions, however [15]. In surgical pathology specimens, the most common tumors to present initially in the bladder are from the prostate, cervix, and colon.
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	Figure 1: In this partial cystectomy specimen, this field is typical of many others, it shows an adenocarcinoma extending into the lamina propria from deeper within the bladder wall, i.e. the bulk of the tumor mass was deep rather than superficial. It proved to be colonic adenocarcinoma.
	Figure 2: A well-differentiated prostatic carcinoma invades into the muscularis propria. Compare these glands with the apprearance of those seen in "Primary Bladder Adenocarcinoma (Fig. 1)."