case_images: PMC11249449_01
case_images: Physical examination at the initial treatment during private surgery.
case_images: cro-2024-0017-0001-539501_F01.jpg
case_images: PMC11249449_01_cro-2024-0017-0001-539501_F01.jpg
case_images: F1
case_images: One week prior to her visit, the nodule developed a traumatic blister due to bruising (Fig. 1).
case_images: Specimen from the primary tumor: most of the tumor was necrotic lesion with scattered active lesions composed of a massive proliferation of atypical clear, balloon-like cells.
case_images: cro-2024-0017-0001-539501_F02.jpg
case_images: PMC11249449_01_cro-2024-0017-0001-539501_F02.jpg
case_images: F2
case_images: The specimen from the primary tumor revealed a predominantly necrotic lesion, with scattered active lesions composed of a massive proliferation of atypical clear, balloon-like cells (Fig. 2).
case_images: Immunohistochemical staining at tumor sites: balloon-like tumor cells were positive for WT1 and CD99.
case_images: cro-2024-0017-0001-539501_F03.jpg
case_images: PMC11249449_01_cro-2024-0017-0001-539501_F03.jpg
case_images: F3
case_images: Immunohistochemical staining showed that these balloon-like cells were positive for Wilms' tumor 1 (WT1) (Fig. 3a), CD99 (Fig. 3b), vimentin, BCL2, and p53 and negative for AE1/AE3, CK20, CD3, CD5, CD10, CD20, CD68, CD163, CD79a, TdT, MPO, TTF1, SALL4, CD31, CD34, D2-40, melan A, EMA, desmin, S-100, a-SMA, MyoD1, chromogranin A, synaptophysin, HHF35, and