Peristrumitis is a hard-to-spell medical term that refers to inflammation of the membrane surrounding the uterus. It is pronounced /pəˌrɪstruːˈmaɪtɪs/ and has a complex spelling due to its Greek origin. The prefix "peri-" means "around", "strum-" refers to the uterus, and "-itis" is a suffix indicating inflammation. Remembering the root words and breaking the word down phonetically can make spelling easier, especially for medical professionals who frequently encounter specialized terminology.
Inflammation of the tissues about a goiter.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.