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A patient with ectopic cortisol production derived from malignant testicular masses

Abstract

Background A 65-year-old man presented to an oncology clinic with bilateral testicular masses, lower extremity edema, and cushingoid appearance.

Investigations Measurements of serum cortisol and adrenocorticotropic hormone levels, testicular ultrasound and abdominal CT scans, and review of histopathology to identify the cellular origin of the ectopic cortisol production.

Diagnosis Cushing syndrome was diagnosed on the basis of a markedly elevated 24-hour urine free cortisol level and classic cushingoid features. The etiology of Cushing syndrome was determined to be an adrenocortical carcinoma arising from testicular adrenal rest cells. Nevertheless, the possibility of a malignant Leydig cell tumor with ectopic cortisol production could not be excluded.

Management Mitotane and metyrapone were used to decrease cortisol production. Excess mineralocorticoid activity was blocked with spironolactone; sodium retention was also managed with sodium restriction and diuretics. Despite initial success with this regimen, the patient died as a result of tumor progression and complications of poorly controlled hypercortisolism.

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Figure 1: Photomicrograph of a tissue specimen from the left testicular tumor of the case patient.
Figure 2: Photomicrograph of a tissue specimen from the left testicular tumor of the case patient.
Figure 3: Adrenal steroid pathway illustrating the sites of action for steroidogenic enzyme inhibitors.

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Acknowledgements

Désirée Lie, University of California, Irvine, CA, is the author of and is solely responsible for the content of the learning objectives, questions and answers of the Medscape-accredited continuing medical education activity associated with this article.

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Correspondence to Shilpa H Jain.

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The authors declare no competing financial interests.

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Jain, S., Sadow, P., Nosé, V. et al. A patient with ectopic cortisol production derived from malignant testicular masses. Nat Rev Endocrinol 4, 695–700 (2008). https://doi.org/10.1038/ncpendmet0985

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