[Enlargement of the sella in primary hypothyroidism]

Length of the sella, depth of the sella and surface of the sella profile of 37 primary hypothyroids were compared with a normal group. All the three parameters were significantly different, though situated in the normal area. The results are discussed on the basis of literature. The reactive formation of hypophyseal tumours at adult age in primary myxoedema is relatively rare. However, in every enlargement of the sella also a primary hypothyreosis should be regraded differential-diagnostically. A therapeutic experiment with thyroid hormones should always be made.