抄録
A 25-year-old woman experienced visual field defects in the 39th week of gestation. A pituitary mass with a suprasellar extension was demonstrated by computerized tomography (CT). The visual impairment improved after delivery and a repeated CT showed that the pituitary mass had undergone a spontaneous regression in size. The postpartum pituitary function tests revealed that the pituitary is preserved for thyroid stimulating hormone, luteinizing hormone and follicle stimulating hormone but not for growth hormone, adrenocorticotropic hormone and prolactin. Although the nature of the lesion in this patient was conjecturable, lymphoid hypophysitis seemed to be a good possibility. This case suggests that some pituitary masses during pregnancy are not always pituitary adenomas and may not require surgical intervention but can be treated by hormone replacement alone with close observation.
