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. Author manuscript; available in PMC: 2021 Apr 1.
Published in final edited form as: Am J Surg Pathol. 2018 Mar;42(3):279–292. doi: 10.1097/PAS.0000000000001000

FIGURE 2.

FIGURE 2.

Gross features and low power images. Gross features (A, C, E). (A) Renal medullary carcinoma (RMC): poorly circumscribed tumor occupying a large part of the parenchyma. (C) Collecting duct carcinoma (CDC): tumor centered in the medulla. (E) FH-deficient RCC: poorly-defined tumor involving the cortex and medulla. Low power images (B, D, F). (B) RMC: the tumor displays infiltrating irregular border and satellite nodules are seen in the cortex. (D) CDC: the tumor is overall well-defined, but focally invasive. Infiltrating growth pattern is also seen. (F) FH-deficient RCC: The tumor is overall well circumscribed with tubulocystic pattern. Multiple benign cystic lesions are seen in adjacent uninvolved renal parenchyma.