An Ectopic ACTH-Producing Carcinoid Tumor Localized by the Measurement of ACTH in the Bronchial Lavage

摘要

We report a case of an ectopic ACTH - producing carcinoid in the lung. Typical Cushingoid appearance, elevated plasma ACTH and serum cortisol, bilateral enlargement of the adrenal glands, absence of pituitary adenoma and negativity in petrosus sinus venous sampling indicated the ectopic ACTH syndrome. Venous samplings from a lung tumor which was detected by the chest X-ray, did not show any step-up of ACTH. However, ACTH con- centration in the bronchoscopic lavage was as high as that in the peripheral blood.