Ectopic ACTH syndrome

Causes

Appropriate Tests

 

Due to the short time course, patients may present with pigmentation and electrolyte abnormalities, rather than with classical Cushingoid features.

Electrolytes; Cortisol urine, ACTH.

Dexamethasone suppression test-long, if diagnosis uncertain.

Lung carcinoma, especially

  • Small cell carcinoma

See Lung carcinoma.

Carcinoid tumour

 

Pancreatic islet cell tumour

See under Pancreatic neoplasm.