rim sign

Any of a number of imaging signs in which one rounded mass is visually superimposed on a larger round mass, such that the periphery of the larger mass is more readily visible
Gastroenterology An opacification of the margin of a congenital choledochal cyst seen by a plain abdominal film
Gynaecology An attenuated annular radiopacity seen in the pelvis by infusion urography corresponding to cystic pelvic mass(es), usually of ovarian origin; a similar finding may occur in benign unilateral pelvic masses with a smooth serosal contour—e.g., fibroma-thecomas, cystadenofibromas
Nephrology A series of connected, overlapping physaliferous rims seen in the nephrogram phase of selective renal angiography of advanced hydronephrosis, where attenuated curved vascular tissue surrounds dilated calices of the renal pelvis
Orthopaedics (1) Snowcap sign (2) A finding on a plain film of a posterior dislocation of the shoulder, which is often accompanied by a fracture of the medial portion of the humeral head; in a positive rim sign, there is a widening—6 mm between the anterior rim of the glenoid fossa and the medial margin/aspect of the humeral head. The sign may also be present in posterior dislocation because the normal glenoid fossa faces as much anteriorly as it does laterally. Because the dislocated humeral head rests against the posterior glenoid rim, the space between the anterior rim and the humeral head appears increased
Paediatrics An annular, attenuated periadrenal radiopacity seen in neonatal haemorrhage in this region, seen by high-dose excretory urography

rim sign

Imaging GI tract An opacification of the margin of a congenital choledochal cyst seen by a plain abdominal film Gynecology An attenuated annular radiopacity seen in the pelvis by infusion urography corresponding to cystic pelvic mass(es), usually of ovarian origin; a similar finding may occur in benign unilateral pelvic masses with a smooth serosal contour–eg, fibroma-thecomas, cystadenofibromas Orthopedics A finding on a plain film of a posterior dislocation of the shoulder, which is often accompanied by a fracture of the medial portion of the humeral head; in a positive RS, there is a widening–≥ 6 mm between the anterior rim of the glenoid fossa and the medial margin of the humerus Pediatrics An annular, attenuated periadrenal radiopacity seen in neonatal hemorrhage in this region, seen by high-dose excretory urography Urology A series of connected, overlapping physaliferous rims seen in the nephrogram phase of selective renal angiography of advanced hydronephrosis, where attenuated curved vascular tissue surrounds dilated calices of the renal pelvis.
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A low-signal-intensity rim ("rim sign") is more evident on T2-weighted MR images.
(17) There are multiple associated CT findings that suggest the diagnosis of acute cholecystitis including GB distention, increased wall thickening in a noncollapsed GB, mucosal hyperenhancement, hyperemia in the GB fossa (CT "rim sign"), and pericholecystic fat stranding (increased density) and/or fuid.
A final imaging pattern, known as the "rim sign," consists of increased pericholecystic hepatic uptake and has been shown to highly correlate with gangrenous cholecystitis.
(4,5) Less commonly, a complete renal artery occlusion may result in decreased attenuation throughout the renal parenchyma with a rim of viable tissue, termed the "rim sign," in the capsule.
A rim of pink at the outside of a pigmented lesion, in some cases even resembling the sun visible around the darker lunar object in a lunar eclipse or a rim of sun at sunset, can be termed the "pink rim sign." The pink rim sign is present in the melanoma in situ in Figure 1(a) and the two invasive melanomas in Figures 4(a) and 5(a).
Images in the Benvenuto-Andrade study show that pink coloration becomes redder in some non contact polarized dermoscopy images and appears in some benign images, creating a false-positive pink rim sign, such as what was seen in a dysplastic nevus and a blue nevus in that study [12].
Similarly, MRI can reveal a cystic mass containing daughter cysts, with rim sign and "water Lilly sign" (12).
Among our study group the frequency expressed as percentages of various secondary signs of ureterolithiasis were hydroureter 25 (83.33 Percent), hydronephrosis of the affected kidney in 23 (76.67 Percent), nephromegaly 16 (53.33 Percent), periureteral edema 19 (63.33 Percent), perinephric stranding 21 (70 Percent), a difference in attenuation between the kidneys 25 (83.33 Percent) while soft tissue rim sign was present in 14 (46.67 Percent) patients.
TELECOMWORLDWIRE-24 October 2007-Alcatel-Lucent and RIM sign strategic agreement to distribute BlackBerry smartphones in China(C)1994-2007 M2 COMMUNICATIONS LTD http://www.m2.com
RIM signed a deal this week with the UAE to avoid suspension of services to its users, but tensions between Dubai and Canada have been building over other issues.
RIM signed its first major licensing deal for Blackberry in 2002 with Nokia , the world's biggest mobile phone maker.
RIM signed agreements with Thai operators Advanced Info Service PCL and TA Orange PCL last month, and TA Orange is to introduce BlackBerry services for retail customers in November, aiming for 6,000-10,000 customers by the end of 2006.