Problems in the Diagnosis of Cushing's Syndrome

Author:

Thomson J. E.1,Thomson J. A.1,Beastall G. H.1

Affiliation:

1. University Department of Medicine, Royal Infirmary, Glasgow and West of Scotland Regional Steroid Laboratory, Royal Infirmary, Glasgow

Abstract

The diagnosis of florid Cushing's syndrome is usually made without difficulty but diagnostic problems may arise. Five such cases are described. Difficulties may occur when the features of the syndrome are incomplete. Three such cases were encountered. In each only one clinical feature was present; these respectively were hypertension, osteoporosis and obesity. The diagnosis was confirmed, however, biochemically and eventually histologically and there was a good response to surgery in each case. Another diagnostic problem, both clinically and biochemically is the obese, hirsute, hypertensive female. Two such cases are described, in whom Cushing's syndrome was diagnosed clinically and biochemically but in whom there was no response to adrenalectomy. Retrospectively the validity of the original diagnosis is questioned. It is concluded that Cushing's syndrome may present in a very incomplete form and should be considered in the differential diagnosis, even if only one feature is present. It is stressed that obesity, hirsutism, hypertension and depression are commonly found in association with normal adrenal function. Urinary free Cortisol and cortisol response to insulin induced hypoglycaemia may be of value in distinguishing these cases from those with endocrine disease.

Publisher

SAGE Publications

Subject

General Medicine

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