Signs in Radiology - 2

73) Gastrointestinal string sign
Sign of Crohn disease.

74) Goblet sign
Sign of ureteral transitional cell carcinoma that may be seen on retrograde or intravenous urography (see also Bergman's coiled catheter
sign).

75) Gull wing appearance
Appearance of erosions that may occur in patients with erosive osteoarthritis.

76) H-shaped vertebral bodies
Shape of vertebral bodies that may be seen in patients with sickle cell disease. See also: Fish vertebrae.

77) Halo sign
Ground-glass attenuation surrounding a pulmonary nodule or mass on CT images. Represents hemorrhage and is highly suggestive of Aspergillus.

78) Hampton's hump
Triangular opacity secondary to infarction in the periphery of the lung distal to a pulmonary embolism.

79) Head cheese sign
Sign of subacute hypersensitivity pneumonitis.

80) Hidebound sign
On small bowel series, crowding of folds in dilated loops of small bowel may be seen in patients with scleroderma.

81) High-attenuating crescent sign
Sign of impending abdominal aortic aneurysm rupture.

82) Hole within a hole
Appearance that may be seen when
eosinophilic granuloma involves the skull.

83) Holly leaf appearance
Chest radiograph finding that may be seen with asbestos pleural plaques.

84) Honda sign
Sacral insufficiency fracture.

85) Hot cross bun sign
May be seen on axial T2 weighted images of the pons in multiple system atrophy.

86) Hot nose sign
Sign that may be observed on brain flow scans in patients with brain death.

87) Hourglass appearance
MRI appearance that may be seen with concentric cystic adventitial disease

88) Interstitial line sign
Sign that may be seen with an interstitial ectopic pregnancy.

89) Inverted Napoleon's hat sign
Sign of severe spondylolisthesis at the
lumbosacral junction.

90) Ivory vertebra sign
Increase in opacity of a vertebral body that retains its size and contours, with no change in the opacity and size of adjacent intervertebral discs.

91) Juxtaphrenic peak sign
Tenting of the diaphragm that may be seen with right upper lobe atelectasis.

92) Keyhole sign
US appearance that may be seen with posterior urethral valves.

93) Lace like Pattern that may be seen with sarcoid arthropathy.

94) Lace-like pattern
Ultrasound appearance of hemorrhagic ovarian cysts.

95) Lacunar skull
Appearance of skull that may be seen in infants with Chiari II malformation.

96) Lambda sign
On a Gallium-67 citrate scan, uptake in the hilar and paratracheal lymph nodes gives the appearance of a lambda. This is seen in sarcoidosis.

97) Lead pipe
Narrowing of colon with loss of haustra that may be seen in patients with ulcerative colitis.

98) Linguine sign
MRI sign that may be seen in patients with intracapsular breast implant rupture.

99) Lobster claw sign
Sign of papillary necrosis on IVU.

100) Lollipop
Appearance of diverticula that may been seen on HSG in patients with adenomyosis.

101) Luftsichel sign
"Air cresent". Sign that may be seen with left upper lobe atelectasis.

102) Mark Morton sign
Throckmorton's sign with a small penis.

103) Mercedes Benz sign
Appearance of gas within gallstones. (on xray )

104) Moulage sign
Effaced loop of bowel that may be seen on a small bowel series in sprue.

105) Molar tooth sign (GU)
Perivesicular extravasation of contrast on CT cystogram in a patient with extraperitoneal bladder rupture.

106) Molar tooth sign (Neuro)
Enlarged and horizontally directed tubular structure on each side of the midline emerging from the midbrain in patients with Joubert syndrome.

107) Monod sign
Air surrounding an aspergilloma (Also see air crescent sign).

108) Mount Fuji sign
CT sign of tension pneumocephalus.

109) Paintbrush appearance
Linear striations of contrast material opacifing collecting tubules that may be seen with medullary sponge kidney.

110) Panda sign
On a Gallium-67 citrate scan, uptake in the lacrimal and salivary glands gives the appearance of a panda. This is suggestive of sarcoidosis.

111) Parallel track sign
Pattern of uptake that may be seen on bone scan in patients with hypertrophic osteoarthropathy.

112) Pear-shaped bladder
Bladder assumes the shape of a pear when it undergoes extrinsic compression due to excess tissue in the pelvis.

113) Pearl necklace sign
MRI sign that may be seen with
adenomyomatosis.

114) Pencil in cup deformity
Erosion pattern of digits that may be seen in patients with psoriatic arthritis.

115) Picture frame vertebral body
Thicken cortex of vertebral bodies that may be seen in patients with Paget disease.

116) Picket fence
Appearance of bowel that may be seen on small bowel series with Whipple disease or gastrointestinal amyloidosis.

117) Pistol grip deformity
Appearance of the proximal femur that may be seen with cam type femoroacetabular impingement.

118) Playboy bunny sign
US sign of the appearance of the confluence of the hepatic veins with the IVC.

119) Polka-dot pattern
Appearance of thickening trabeculations seen in intraosseous hemangiomas of the spine. See
also Corduroy appearance.

120) Porcelain gallbladder
Calcification of the gallbladder wall.

121) Putty kidney
Appearance that may be seen with end-stage renal tuberculosis.

122) Reversal sign
CT sign of anoxic brain injury where gray matter is lower in attenuation than white matter (the opposite is normal).

123) Reversed halo sign
Relatively specific sign of pulmonary nodules in cryptogenic organizing pneumonia.

124)Ribbon bowel
Appearance of bowel that may be seen on barium studies in graft versus host disease.

125) Ribbon ribs
Appearance of ribs that may be seen with neurofibromatosis 1.

126) Rice kernel
CT appearance that may be seen with dacryolithiasis.

127) Rigler's sign
Sign of pneumoperitoneum where both sides of a loop of bowel are outlined by air.

128) Rim sign
On cholescintigraphy, increased uptake is seen in the region of the gallbladder fossa. Sign is specific for acute cholecystitis.

129) Ring of fire sign
US finding. Hypervascular ring in the adnexa that may be seen with either ectopic pregnancy or corpus luteum.

130) Ring sign
CT sign of epiploic appendagitis.

131) Rosary sign
CT sign that may be seen with
adenomyomatosis.

132) Rugger jersey spine sign
Appearance of spine that may be seen with hyperparathyroidism.