title: Severe hemorrhage secondary to primary, isolated in situ carcinoma of renal pelvis.
abstract: Primary transitional cell carcinoma in situ of the renal pelvis is usually found in association with ureteral or vesical neoplasms. However, a case of primary carcinoma in situ of the renal pelvis without previous or concomitant ureteral or vesical carcinoma is presented. Microscopic hematuria is a common finding in cases of carcinoma in situ. Gross hematuria is unusual, but not rare. However, severe hemorrhage (hematocrit 12.1, hemoglobin 3.3 g/dL) as the presenting feature is rare. Diagnosis of such microscopic isolated lesions can be difficult to make pre-operatively. Only after nephrectomy will such a lesion be diagnosed, as was the case in this patient.
authors.affiliation: Downstate Medical Center, Brooklyn, New York.
authors.forename: J
authors.initials: J
authors.lastname: Gonzales
authors.forename: A I
authors.initials: AI
authors.lastname: Hashmat
mesh_terms: D000328:Adult; D002278:Carcinoma in Situ / Q000150:complications* / Q000473:pathology; D002295:Carcinoma, Transitional Cell / Q000150:complications* / Q000473:pathology; D005260:Female; D006470:Hemorrhage / Q000209:etiology*; D006801:Humans; D007674:Kidney Diseases / Q000209:etiology*; D007680:Kidney Neoplasms / Q000150:complications* / Q000473:pathology; D007682:Kidney Pelvis / Q000473:pathology