Intra-abdominal inflammatory pseudotumor-like follicular dendritic cell sarcoma associated with paraneoplastic pemphigus: A case report and review of the literature

Figure 3 The tumor tissue had a clear boundary (HE × 20) (A), spindle tumour cells were distributed in the background of abundant small lymphocytes (HE × 100) (B), the neoplastic cells were strong positive for CD21 (× 200) (C), and the neoplastic cells were negative for CD117 (× 100) (D).