[Ultrasonic demonstration of lipomatous tissues and tumors (author's transl)].
The echostructure of 5 subcutaneous lipoma, 2 renal angiomyolipomas, and 37 renal fibrolipomatoses is analysed. The subcutaneous lipomas were echo-pour, and the angiomyolipomas echogenic, while 33/37 renal fibrolipomatoses were found to be echo-pour and 4/37 echogenic. All renal fibrolipomatoses had ill-defined margins and did not show increased sound-transmission behind the fibrolipomatoses. Experimental studies show that the echogenicity is depended on the number of acoustic interfaces fatty tissue/nonfatty tissue. Echogenic fatty tissue has a greater content of fibrous/collagen fibres and a greater number of interfaces fatty tissue nonfatty tissue. Collagen fibres with the high elastic modulus are a major factor of echogenicity.
D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006391:Hemangioma / Q000175:diagnosis*; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis*; D008067:Lipoma / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography
Darstellung fettreicher Gewebe und tumoren im Sonogramm.