Two case reports and literature review for hepatic epithelioid angiomyolipoma: Pitfall of misdiagnosis

Figure 1 Imaging and pathological immunohistochemical findings of case 1. A: Computed tomography scan suggested a mass of 5 cm × 3 cm in the right lobe of liver; B, C: The postoperative pathological diagnosis was hepatic epithelioid angiomyolipoma (HE staining, B: × 100, C: × 400); D-I (× 200): Immunohistochemistry results were as follows: Calponin (++) (D); estrogen receptor (positive in some cells) (E); progesterone receptor (+) (F); K-pan (weak positive) (G); vimentin (partially positive) (H); and actin (partially positive) (I). HE: Hematoxylin and eosin.

Figure 2 Computed tomography guided percutaneous liver tumor puncture and pathological findings of case 2. A: Computed tomography scan revealed a mass of 3.5 cm × 3.0 cm in liver; B-D: The pathological diagnosis suggested metastatic hepatic epithelioid angiomyolipoma (HE staining, B: × 100, C: × 200, D: × 400).