Case Illustration
The 75-year-old female presented with nodul in the perianal region that has been present for several months. DX was atheroma and excision of the tumor was performed. Pathology report confirmed MIXED ADENONEUROENDOCRINE CARCINOMA-MANEC. Additional immunohistochemistry analysis was performed on the examined sample: Synaptophysin-positive, CK 20-positive, CK AE1 / AE3-positive, CK7-negative, CA 125-negative. (Figure 1 )