Fig. 3From: Value of transrectal ultrasound-guided biopsy in endoscopy negative biopsy patients with rectal lesions(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 samplesBack to article page