Wang X, Lovelace E, Pacheco RR, Pacheco R, Schuster ME, Bernstein A, Akgul M, Lightle A. Atrophic Kidney-Like Lesion-Case Report and Review of the Literature.
Int J Surg Pathol 2024:10668969241226703. [PMID:
38291647 DOI:
10.1177/10668969241226703]
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Abstract
Atrophic kidney-like lesion (AKLL) is a rare kidney lesion, which was recently suggested by the Genitourinary Pathology Society as a provisional entity. As of now, 16 examples of AKLL have been described in the literature. Here we report a new tumor which shows similar clinicopathologic characteristics with those previously reported in AKLL. Immunohistochemical (IHC) studies in the current lesion identified a biphasic staining pattern consisting of a mixture of WT1+/KRT7-/PAX8- large dilated cysts and WT-/KRT7+/PAX8+ small atrophic cysts. Histomorphologic features of AKLL overlap with several neoplastic and non-neoplastic entities which can lead to mischaracterization. Awareness of the differentiating features is likely important when evaluating these lesions.
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