Ball On Tee Sign Radiology
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Ball on tee sign radiology. Lobster claw sign refers to a urographic pattern of papillary excavation that may be seen with renal papillary necrosis. Our radiology t shirt is the perfect tshirt for xray technician fans. Excretory urogram frontal view displaying the left side of the collecting system shows contrast material in a large papillary cavity the golf ball. In conclusion the golf ball on tee sign is part of the spectrum of papillary necrosis and is distinguished by a papillary cavity that lies adjacent to a blunted calyx.
This patterns of papillary excavation is most often seen with. The ball on tee sign golf ball on tee sign or egg in cup appearance refers to a urographic pattern of papillary excavation that may be seen with renal papillary necrosis. The descriptive terms ball on tee lobster claw and signet ring refer to the radiographic patterns of papillary excavation seen with papillary necrosis fig 28 33 34. The golf ball on tee sign.
Contrast material filling central excavations in the papilla of the interpolar region gives ball on tee appearance. Excavation extending from the caliceal fornices produces the lobster claw deformity. The lobster claw sign occurs when there is excavation around the edge of the papilla and the contrast material that extends into this excavated region looks like the claws of a lobster when viewed en face. Diagnosing papillary necrosis by recognizing the golf ball on tee sign is important for preserving renal function as many of the causes of papillary necrosis are treatable.
Department of radiology wake forest baptist medical center wake forest university school of medicine medical center blvd winston salem 27157 nc usa raymond b. Renal papillary and calyceal lesions on ct urography. 7 september 2016 abdominal radiology. The sign occurs when contrast material fills central excavations in the papilla of the interpolar region giving a ball on tee appearance.
The golf ball on tee sign is seen during excretory urography and appears as a contrast agent filled cavity the golf ball that lies adjacent to a blunted calyx the tee. Review and comparison of findings at multi detector row ct and intravenous urography. Great present for men women and kids. 31 august 2014 abdominal imaging vol.
The necrotic papillary tip may remain within the excavated calix producing the signet ring sign when the calix is filled with contrast material.