Renal Oncocytoma
Supplemental Studies
Immunohistology
| CK7 | neg to scattered positive cells |
| EMA | pos |
| CD10 | variable reports |
| PAX2, PAX8 | >85% |
Extracellular hyaline bodies positive for collagen type I and IV, laminin and heparan sulfate
Immunohistologic markers useful for distinguishing major types of renal cell carcinoma
| CA-IX | Vim | CD117 | AMACR Racemase | PN15 /PNRA/ gp200 | CK7 | |
|---|---|---|---|---|---|---|
| Clear Cell | 100% | >85% | <5% | 15-25% | 85% | neg or focal |
| Papillary | 50 | >90 | <20 | >80 | >85 | 20-80% |
| Chromophobe | 0 | 0 | >80 | <15 | 0-45 | >70% strong |
| Oncocytoma | 0 | 0 | >90 | <15 | 0 | neg to scattered |
References for general IPOX of major types of RCC
- Truong LD, Shen SS. Immunohistochemical diagnosis of renal neoplasms. Arch Pathol Lab Med. 2011 Jan;135(1):92-109.
- Allory Y, Bazille C, Vieillefond A, Molinié V, Cochand-Priollet B, Cussenot O, Callard P, Sibony M. Profiling and classification tree applied to renal epithelial tumours. Histopathology. 2008 Jan;52(2):158-66.
- Molinié V, Balaton A, Rotman S, Mansouri D, De Pinieux I, Homsi T, Guillou L. Alpha-methyl CoA racemase expression in renal cell carcinomas. Hum Pathol. 2006 Jun;37(6):698-703.
- Paner GP, Srigley JR, Radhakrishnan A, Cohen C, Skinnider BF, Tickoo SK, Young AN, Amin MB. Immunohistochemical analysis of mucinous tubular and spindle cell carcinoma and papillary renal cell carcinoma of the kidney: significant immunophenotypic overlap warrants diagnostic caution. Am J Surg Pathol. 2006 Jan;30(1):13-9.
- Liu L, Qian J, Singh H, Meiers I, Zhou X, Bostwick DG. Immunohistochemical analysis of chromophobe renal cell carcinoma, renal oncocytoma, and clear cell carcinoma: an optimal and practical panel for differential diagnosis. Arch Pathol Lab Med. 2007 Aug;131(8):1290-7.
- Memeo L, Jhang J, Assaad AM, McKiernan JM, Murty VV, Hibshoosh H, Tong GX, Mansukhani MM. Immunohistochemical analysis for cytokeratin 7, KIT, and PAX2: value in the differential diagnosis of chromophobe cell carcinoma. Am J Clin Pathol. 2007 Feb;127(2):225-9.
- Avery AK, Beckstead J, Renshaw AA, Corless CL. Use of antibodies to RCC and CD10 in the differential diagnosis of renal neoplasms. Am J Surg Pathol. 200 Feb;24(2):203-10.
- Wang HY, Mills SE. KIT and RCC are useful in distinguishing chromophobe renal cell carcinoma from the granular variant of clear cell renal cell carcinoma. Am J Surg Pathol. 2005 May;29(5):640-6.
- McGregor DK, Khurana KK, Cao C, Tsao CC, Ayala G, Krishnan B, Ro JY, Lechago J, Truong LD. Diagnosing primary and metastatic renal cell carcinoma: the use of the monoclonal antibody 'Renal Cell Carcinoma Marker'. Am J Surg Pathol. 2001 Dec;25(12):1485-92.
- Yoshida SO, Imam A. Monoclonal antibody to a proximal nephrogenic renal antigen: immunohistochemical analysis of formalin-fixed, paraffin-embedded human renal cell carcinomas. Cancer Res. 1989 Apr 1;49(7):1802-9.
Genetic Study
- Frequent loss of Y or chromosome 1
- No consistent loss of 3p or trisomy 7/17
- Not commonly used for diagnosis
