Fig. 3

(a) A cervix metastasis squamous carcinoma located in the anal tube in a 43-year-old woman was misdiagnosed. (b) The tumor showed abundant vascular on color Doppler image; (c) the tumor presented hyper-enhanced on contrast-enhanced condition, and there was no necrosis area in the tumor. (d) The biopsy needle (arrow) passes through the tumor center to acquire biopsy samples