Two slices through a circumscribed lesion, showing a nodular pattern of white gelatinous areas, in many of which there is recent haemorrhage.
At the age of 81, this man presented with a swelling in the left buttock. The lesion was removed from the presacral area; there is no record of any sacral destruction. The tumour weighed 800 g, and was 15 cm. in maximum diameter. Ten months later a tumour nodule was seen at the 10cm. level in the rectum, and described as an adenocarcinoma, although there seems doubt as to this. Six months later there was recurrent tumour apparent in the anal canal, and this man finally died from metastatic tumour at the age of 85.