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 the name of a person, place, thing, or idea. Whatever exists, we assume, can be named, and that name is a noun. A proper noun, which names a specific person, place, or thing (Carlos, Queen Marguerite, Middle East, Jerusalem, Malaysia, Presbyterianism, God, Spanish, Buddhism, the Republican Party), is almost always capitalized.