(A) – Cast Artifact
(B) – Real Hyaline Cast
This patient had a Urinalysis, the dipstick results were as follow:
Glucose – 100 mg/dL
Bilirubin – neg
Ketone – neg
Specific Gravity – 1.010
Blood – ...
Hippuric Acid crystals are rarely seen – yellow-brown or colorless elongated prisms or plates and maybe so thin to resemble needles and they often cluster together
Ammonium biurate crystals are yellowish-brown and can be seen in a “thorn apple” shape (round with thorny projections) or in spherical form.
Fatty casts are identified by the presence of refractile lipid droplets within the protein matrix of the cast. The background matrix of the cast may be hyaline or granular in nature. ...