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Figure 2: (a and b) Finely multivacuolated cells of brown adipose tissue, misdiagnosed as a well-differentiated liposarcoma (H and E, ×200). (c) A well-differentiated liposarcoma/atypical lipomatous tumor, missed on biopsy (H and E, ×200). (d) Same case showing distinct atypical stromal cells and lipoblasts (indented tumor nuclei by cytoplasmic vacuoles), noted, on review (H and E, ×400). Inset: S100 protein positivity highlighting adipocytes, including lipoblasts (DAB, ×400). DAB = Diaminobenzidine

Figure 2: (a and b) Finely multivacuolated cells of brown adipose tissue, misdiagnosed as a well-differentiated liposarcoma (H and E, ×200). (c) A well-differentiated liposarcoma/atypical lipomatous tumor, missed on biopsy (H and E, ×200). (d) Same case showing distinct atypical stromal cells and lipoblasts (indented tumor nuclei by cytoplasmic vacuoles), noted, on review (H and E, ×400). Inset: S100 protein positivity highlighting adipocytes, including lipoblasts (DAB, ×400). DAB = Diaminobenzidine