Hindgut NETs

Pathophysiology

Usually non-secretory
Not associated with carcinoid syndrome, even when metastatic
Colon
- Mostly found in 70s patients being evaluated for diarrhoea, abdominal pain, anorexia, or weight loss
- Mostly right colon/caecum
- Average 5cm on diagnosis
Rectum
- Usually asymptomatic
- Size correlates closely with the likelihood of metastases (24% of those >2cm)
Genitourinary
- Case reports only