A 68 years-old female presenting with anal squamous cell carcinoma T3N0M0 2 years ago, treated with chemoradiation (CDDP-FU and 45 Gy). On the follow-up imaging, a 10 x 7 mm lymph node is localized on the mesorectum, 10 cm from the anal verge. PAAF confirms metastasis of squamous carcinoma. No anal or rectal lesions are […]