title: Tubulocystic renal cell carcinoma: Report of a rare case.
abstract: Cystic neoplasms of the kidney are rare, and present a unique diagnostic challenge. We report the case of an elderly male who presented with a large cystic neoplasm, which was a diagnostic dilemma clinically and radiologically. Histopathological examination showed a tumour composed of variably sized tubules lined by atypical cells having large round nuclei with prominent nucleoli. Hobnailing was seen at places. Tumour cells were immunopositive for pancytokeratin, vimentin, CD10, CK19 and AMACR, confirming a diagnosis of tubulocystic renal cell carcinoma (TC-RCC).
authors.affiliation: Department of Pathology, All India Institute of Medical Sciences, New Delhi, India;
authors.forename: Aanchal
authors.initials: A
authors.lastname: Kakkar
authors.affiliation: Department of Pathology, All India Institute of Medical Sciences, New Delhi, India;
authors.forename: Mehar C
authors.initials: MC
authors.lastname: Sharma
authors.affiliation: Department of Surgical Disciplines, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Manpreet
authors.initials: M
authors.lastname: Uppal
authors.affiliation: Department of Surgical Disciplines, All India Institute of Medical Sciences, New Delhi, India.
authors.forename: Sunil
authors.initials: S
authors.lastname: Chumber