Abstract

Hoffman syndrome, a rare presentation of hypothyroidism, is characterized by pseudo-hypertrophy and stiffness of muscles, myxoedematous features. Long standing hypothyroidism can cause pituitary hyperplasia which is difficult to distinguish with pituitary adenoma even with contrast MRI. We describe a case of a 48 years old male presenting as ‘Hoffman syndrome’ with reactive pituitary hyperplasia that mimicked a pituitary macroadenoma. After 20 days of thyroid hormone therapy, the patient had improvement of the muscular cramps. After 03 months of active therapy a repeat MRI was done which showed regression of size of the mass. In a case of primary hypothyroidism with a solid mass lesion of the pituitary gland, pituitary hyperplasia secondary to hypothyroidism rather than pituitary adenoma should be excluded to avoid unnecessary surgical intervention which has its own complications.

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