- (Hyaline cast) Urinary casts are cylindrical structures produced by the
kidney and present in the urine in certain disease states. They form in the
distal convoluted tubule and collecting ducts of nephrons, then dislodge and
pass into the urine, where they can be detected by microscopy.
- these casts are made of the protein itself. They are usually caused by
dehydration, exercise, or diuretic medicines.
7 year old female presents for renal biopsy
because of hematuria and proteinuria. A skin rash is present. There is no
history of arthritis or arthralgias. BP 110/65. Urine sediment: Hyaline and
mixed casts. Urine: Hematuria 1+, Proteinuria 2+ (71.8 mg/dl), 446.1 mg
Protein/24 hours, urine creatinine 83.39. Serum: Creatinine 0.54 mg/dl, BUN 10
mg/dl, C3 180, C4 43, ANA < 40, ANCA <120 & negative for P-ANCA and
C-ANCA pattern, ASO 44, Albumin 4.4.
Cilindro hialino que atraviesa todo el
campo.Muestra:sedimento de orina. Hyaline cast.