Staging System of Sheldon et al for Urachal Carcinoma

Sheldon et al developed an anatomic system for staging a urachal carcinoma. The authors are from the University of Minnesota.

Parameters:

(1) extent within the urachus

(2) local extension into adjacent organs

(3) metastases

Urachal Extent	Local Extension Adjacent Organs	Metastases	Stage
mucosa only	none	none	I
invades into wall	none	none	II
NA	bladder	none	IIIA
NA	abdominal wall	none	IIIB
NA	peritoneum	none	IIIC
NA	other organ	none	IIID
NA	NA	lymph nodes	IVA
NA	NA	distant sites	IVB

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