A back-to-back tumor composed of papillary renal cell carcinoma and oncocytoma treated by laparoscopic partial nephrectomy: a case report

• Published in: Journal of medical case reports Vol. 12; no. 1; p. 146
• Main Authors: Kang, Su Hwan, Seo, Won Tae, Kang, Pil Moon, Rhew, Hyun Yul, Jeon, Yo Han, Cheon, Bong Kwon, Kim, Taek Sang
• Format: Journal Article
• Language: English
• Published: England BioMed Central Ltd 21.05.2018; BioMed Central; BMC
• Subjects: Abdomen; Carcinoma, Renal cell; Care and treatment; Case Report; Case reports; Case studies; Collison tumor; Diagnosis; Family medical history; Hybrid tumor; Kidney cancer; Laparoscopic partial nephrectomy; Laparoscopy; Medical prognosis; Papillary renal cell carcinoma; Patients; Renal oncocytoma; Surgery; Survival analysis; Thyroid gland; Tumors; Renal oncocytoma; Papillary renal cell carcinoma; Laparoscopic partial nephrectomy; Collison tumor; Hybrid tumor
• ISSN: 1752-1947; 1752-1947
• DOI: 10.1186/s13256-018-1662-7

Renal oncocytoma is the most common benign renal tumor, and papillary renal cell carcinoma is the second most common histologic subtype of renal cell carcinoma. Renal tumors containing different components such as papillary renal cell carcinoma and oncocytoma are extremely rare. A renal mass was incidentally detected in a 52-year-old Korean woman, and a computed tomographic scan showed a 32-mm multicystic mass with some calcifications in the lower pole of the right kidney. She underwent laparoscopic partial nephrectomy without any perioperative complications. We found a papillary renal cell carcinoma and an oncocytoma in a tumor mass. The possibility of a mixed malignant tumor should be considered while treating benign tumors such as oncocytoma.