(she´әn) postpartum pituitary necrosis.
Type: Term Pronunciation: shē′an Definitions: 1. hypopituitarism developing postpartum as a result of pituitary necrosis; caused by ischemia due to a hypotensive episode during delivery. Synonyms: pituitary cachexia, postpartum pituitary necrosis syndrome, Simmonds disease, thyrohypophysial syndrome