Somatostatin Responsive ACTH and Precursor Excess in a Midgut Mesentery NET Abstract #1078

Introduction: ACTH production from a midgut mesentery NET is extremely rare (1). A 62y old woman presented with hypokalaemia (2mmol/L) and hyperpigmentation, 11y after surgery of a pT3N1Mx non-functional G1 NET with SRS positive, non-resectable but stable, residual mass encasing mesenteric vessels. Serum cortisol (3261 nmol/L), ACTH (796 ng/L), CgA (530 pmol/L) and urine total cortisol metabolites (33920 µg/24h) including 14 sub-products indicated change of biological behaviour into a functioning NET. Pituitary or pulmonary sources were excluded
Aim(s): To test somatostatin (SS) responsiveness of ACTH excess
Materials and methods: A test dose of SS 100µg sc was applied
Conference: 12th Annual ENETS Conference (2015)
Category: Medical treatment - SMS analogues, interferon
Presenting Author: Dr., Ass Prof. Martin O. Weickert

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