Rib mass in a young male with a renal mass (not biopsied). Morphology was entirely tubulocystic. Thread continued below. π #GUpath 
This is what the follow up resection looked like. I received this a few years ago, before we had the FH stain in house. Given the extensive tubulocystic morphology and high grade nuclei, I asked the clinician to test the pt for an FH gene mutation (he was + for the mutation). π
Final diagnosis: HLRCC.
Tumors may be extensively tubulocystic (TC), especially on bx. These are far more common (in my practice) than true TC RCC's. I run the FH stain on all RCCs with TC features.
Bx was signed out as RCC with TC features, clinically exclude HLRCC. #GUpath
Tumors may be extensively tubulocystic (TC), especially on bx. These are far more common (in my practice) than true TC RCC's. I run the FH stain on all RCCs with TC features.
Bx was signed out as RCC with TC features, clinically exclude HLRCC. #GUpath
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