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Ectopic ACTH syndrome is a very rare cause of pediatric Cushing’s syndrome. And if present, bronchial or thymic carcinoids predominate as causes. We hereby demonstrate a first case report of ACTH-producing ovarian steroid cell tumor, NOS, causing ectopic ACTH syndrome in a prepubertal girl.
The production of the peptide hormones ACTH, α-MSH, and β-endorphin requires proteolytic processing of POMC which is hypothesized to utilize dual cysteine- and subtilisin-like protease pathways, consisting of the secretory vesicle cathepsin L pathway and the well-known subtilisin-like prohormone convertase (PC) pathway. To gain knowledge of these protease components in human pituitary where POMC-derived...
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