Showing 881 - 890 of 1103 Items
RENAL CELL CARCINOMA
Cancer of the kidney.
RENAL PELVIS
Central part of the kidney where urine collects and drains into the ureter.
RESECTION
To cut away or remove.
RESTRICTED DIFFUSION
A bright spot on diffusion MR images. This often represents an area of dead brain or stroke.
RETENTION CYST
Also called a "mucous" retention cyst. A collection of fluid usually occurring in the sinuses. On CAT scan, retention cyst can look like polyps.
RETROLISTHESIS
Slippage of spine bone backwards.
RETROPERITONEAL
Means behind the peritoneum (a thin membrane or sac that contains the abdominal organs).
RHEUMATOID ARTHRITIS
Type of arthritis characterized by inflammation of joints and erosions (bony defects that look like rat bites).
RIM CALCIFICATION
These look like white ovals or circles on mammograms. These are likely not cancerous. These can be associated with cysts or fat necrosis. These are also known as "egg shell calcifications".
RINGDOWN ARTIFACT
Ultrasound finding that looks like comet tail in the sky. It can be seen with a small calcium deposit, cholesterol deposit, or sometimes foreign objects.
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