Short report
Gynaecomastia as a presenting feature of thyrotoxicosis
W B Chan, V T F Yeung, C C Chow, W Y So, C S Cockram
Department of
Medicine and Therapeutics, Prince of Wales Hospital, Chinese University
of Hong Kong, Shatin, NT, Hong Kong
Accepted 2 November
1998.
The association between gynaecomastia and thyrotoxicosis is
well recognised. However, the reported frequency of the association is
variable, partly depending upon the defining criteria used. Here we
report two patients with thyrotoxicosis in whom gynaecomastia was the
presenting feature. Both patients had other contributing factors, which
are assumed to have predisposed to gynaecomastia. In both patients, the
gynaecomastia resolved with successful treatment of the thyrotoxicosis.
When gynaecomastia is a presenting, or prominent feature of
thyrotoxicosis, the possibility of additional underlying pathology
should be considered.
Keywords: gynaecomastia; thyrotoxicosis; sex hormone
© 1999 by The Fellowship of Postgraduate Medicine
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