Source:http://linkedlifedata.com/resource/umls/id/C0040414
MSH: A benign condition of the tongue characterized by hypertrophy of the filiform papillae that give the dorsum of the tongue a furry appearance. The color of the elongated papillae varies from yellowish white to brown or black, depending upon staining by substances such as tobacco, food, or drugs. (Dorland, 27th ed),NCI: A benign condition affecting the dorsum of the tongue. It is characterized by defective desquamation resulting in elongation of the filiform papillae. The dorsum of the tongue has a furry appearance and is usually stained black.