Summary
Two male patients with Cushing’s syndrome secondary to metastatic medullary thyroid carcinoma (MTC) were observed in our series of 49 patients with MTC admitted during years 1969–90. A 32-year old male (Case 1) and a 39-year old male (Case 2) had been initially treated elsewhere for neck tumours. Nearlytotal thyroidectomy was performed in Case 1, whereas the other patient was treated by irradiation. They were admitted to the Institute of Oncology Ljubljana (10) for the diagnosis and treatment. MTC was confirmed in both cases. Serum thyreocalcitonin (TC) and CEA assay were evaluated for diagnosis, treatment response and follow-up. In both cases the appropriate surgery and additional multimodal therapy failed to normalize tumour marker values. Bone and/or liver metastases were diagnosed in both cases 22 and eight months after admission, respectively. Clinical signs and symptoms indicating Cushing’s syndrome accompanied the onset of liver metastases. ACTH and Cortisol levels were elevated and ectopic ACTH production was confirmed by endocrinologic tests.
Medullary thyroid carcinoma (MTC) was recognized as a new clinicopatho-logical entity by Hazard et al. in 1959 [4]. Among numerous substances such as thyreocaltitonin (TC) and carcinoembrionic antigen (CEA) secreted by MTC cells, also ACTH is produced in rare instances. We present two patients with MTC in whom ACTH dependent Cushing’s syndrome [5,7,21] accompanied the onset of MTC liver metastases.
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Bergant, D., Auersperg, M., Us-Krašovec, M., Petrič, G., Hočevar, M. (1993). Medullary Thyroid Carcinoma: Ectopic ACTH Production by Liver Metastases (Report of Two Cases). In: Pimpl, W., et al. Struma maligna. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-78192-6_19
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DOI: https://doi.org/10.1007/978-3-642-78192-6_19
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