title: Unusual renal tumour: multilocular cystic renal cell carcinoma.
abstract: Multilocular cystic renal cell carcinoma (MCRCC) is a rare presentation of renal cell carcinoma. Most patients are asymptomatic and frequently MCRCCs are detected incidentally. MCRCCs have good prognosis because of their low malignant potential. We report a case of a 39-year-old woman who presented with mild right flank pain and normal laboratory data. On imaging examinations, a Bosniak III cystic lesion was detected in the lower third of the right kidney. She underwent right partial nephrectomy and histopathology showed a multilocular cystic renal cell carcinoma Fuhrman grade 1. In this article, we also present a review of the literature on MCRCC, highlight the correlation of the pathological and imaging characteristics of these low aggressive renal lesions, and underscore the importance of their recognition to prevent unnecessary radical surgery.
authors.affiliation: Department of Radiology, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal.
authors.forename: Marta Morna
authors.initials: MM
authors.lastname: Palmeiro
authors.affiliation: Department of Radiology, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal.
authors.forename: João Luz
authors.initials: JL
authors.lastname: Niza
authors.affiliation: Department of Radiology, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal.
authors.forename: Ana Luisa
authors.initials: AL
authors.lastname: Loureiro
authors.affiliation: Department of Radiology, Instituto Português de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal.
authors.forename: João Paulo
authors.initials: JP
authors.lastname: Conceição e Silva
mesh_terms: D000328:Adult; D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery*; D009392:Nephrectomy / Q000379:methods; D059351:Organ Sparing Treatments / Q000379:methods*; D016896:Treatment Outcome