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J. Sagel, MB, ChB, FCP(SA)
Special Diagnostic and Therapeutic Unit Veterans Administration Hospital Charleston, SC 29403 Division of Endocrinology, Metabolism and Nutrition Medical University of South Carolina Charleston, SC 29401

L. A. Distiller, MB, BCh, FCP(SA); J. E. Morley, MB, BCh; H. Isaacs, FRCP
Divisions of Endocrinology and Neurology University of Witwatersrand Medical School and Johannesburg General Hospital Johannesburg, South Africa

Arch Neurol. 1976;33(7):520.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

The clinical features of myotonia dystrophica include various endocrinopathies, of which gonadal failure is the most frequently encountered.¹

The frequency of thyroid abnormalities such as goiters and nodules is not generally appreciated. Previous works have shown that thyroid function as assessed by protein-bound iodine and thyroidal ¹³¹I uptake studies is normal. However, a low basal metabolic rate is found in about 60% of these subjects.²

The availability of synthetic thyrotropin-releasing hormone (TRH) and its effect on plasma thyroid-stimulating hormone (TSH) has provided an opportunity for more precise investigation of the hypothalamic-pituitary-thyroid axis in an attempt to further elucidate the hypometabolic state.

Twelve subjects (eight males and four females) with myotonia dystrophica were studied. All the patients were clinically euthyroid, but two of them had solitary "cold" thyroid nodules. One of these patients had a papillary carcinoma. . . . [Full Text PDF of this Article]

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