Small hyperenhancing rectal lesion appears to be primary malignant lesion with metastatic lymph nodes in right perirectal space.

Another irregular marginated lesion in right perirectal space which appears to invade the surrounding structures is likely to be metastatic lymph nodal mass.

Tumor thrombosis in inferior vena cava.

Lesion in liver appears to be metastasis which was the cause for the present complaint of patient.

Biopsy of the rectal lesion was done: Histopathology report with Immunohistochemistry shows Neuroendocrine Tumor, Well Differentiated, WHO grade I with KI 67 index: 2%

As it happens in most of the cases of neuroendocrine tumor, the lesion in rectum was detected incidentally with presenting complaint being the pain in right hypochondrium due to hepatic metastasis.