Complete pathological response in rectal cancer after neoadjuvant therapy - case report

A fifty-four year old woman underwent colonoscopy due to symptoms of altered bowel habit and weight loss. There was a malignant looking lesion at her rectosigmoid junction [Fig. 1a] which was confirmed histologically to be a moderately differentiated adenocarcinoma. Although the blood results were normal, her CT scan and MRI [Fig 2a] showed an apple core lesion at rectosigmoid junction which was deemed to be Stage IIIC (T4aN2aM0)