Causes. Retroperitoneal fibrosis occurs when extra fibrous tissue forms in the area behind the stomach and intestines. The tissue forms a mass (or masses) that can block the tubes that carry urine from the kidney to the bladder.
noun /naÊn/ n a word or group of words that refers to a person, place, or thing or any syntactically similar word (as modifier): a noun phraseAbbreviation: N, n Related adjective(s): nominal Etymology: 14th Century: via Anglo-French from Latin nÅmen name. Ënounal adj.
A noun is a word used to denote a person, place, thing, or idea. Unlike English, in Spanish all nouns are either masculine or feminine. If you are an English speaker, the idea of gender makes sense for words like man or woman but not for words like table or pencil.. noun is a word used to denote a person, place, thing, or idea. Unlike English, in Spanish all nouns are either masculine or feminine. If you are an English speaker, the idea of gender makes sense for words like man or woman but not for words like table or pencil..