title: [Intraluminal renal metastasis from a rectal adenocarcinoma: an unusual site].
abstract: Primary adenocarcinoma of the urinary tract are uncommon. But secondary involvement of pyelocalyceal system by metastasis of colorectal origin is rare. We report a case of late rectal metastasis with renal pelvis growth presenting as a pyonephrosis. This study emphasizes the relevance of cytokeratin 7 and 20 immunostaining in such differential diagnosis.
authors.affiliation: Service d'Anatomie Pathologique B, CHRU Pontchaillou, Rennes. nathalie.rioux@chu-rennes.fr
authors.forename: N
authors.initials: N
authors.lastname: Rioux-Leclercq
authors.forename: F
authors.initials: F
authors.lastname: Le Gall
authors.forename: J
authors.initials: J
authors.lastname: Ziade
authors.forename: J J
authors.initials: JJ
authors.lastname: Patard
authors.forename: F
authors.initials: F
authors.lastname: Guille
authors.forename: B
authors.initials: B
authors.lastname: Lobel
authors.forename: M P
authors.initials: MP
authors.lastname: Ramee
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology* / Q000556:secondary*; D000368:Aged; D003937:Diagnosis, Differential; D006801:Humans; D007150:Immunohistochemistry; D007381:Intermediate Filament Proteins / Q000032:analysis; D053554:Keratin-20; D053552:Keratin-7; D007633:Keratins / Q000032:analysis; D007680:Kidney Neoplasms / Q000473:pathology / Q000556:secondary*; D008297:Male; D012004:Rectal Neoplasms / Q000473:pathology*
chemical_list: D007381:Intermediate Filament Proteins; C507499:KRT20 protein, human; C507497:KRT7 protein, human; D053554:Keratin-20; D053552:Keratin-7; D007633:Keratins