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 person, place or thing; an adjective modifies or describes the noun. The girl is a beauty -- beauty being a noun. The girl can also be beautiful -- beautiful, in this case, being an adjective. Turning a noun into an adjective requires only a few minor changes to the ending of a word.