The Radiologist Eye
The Eyes sees what the Mind knows.
Spotter Session A
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Rt.sided aortic arch in patient with cour-en-sabout heart: TETRALOGY OF FALLOT -trachea displaced towards midline
OSTEOMA: FRONTAL SINUS
Cavernous haemangioma. (A) T2-weighted axial image showing typical mixed signal intensity lesions. High signal is due to methaemoglobin and the low signal intensity rim of haemosiderin indicates an old haemorrhage. The ‘popcorn’ appearance of the larger lesion is typical of a ‘cavernoma’. Note the blood–fluid level in the smaller lesion (arrow). (B) Unenhanced CT of the same patients shows the lesions to be predominantly high density with tiny foci of calcification (arrows).
FIBROUS DYSPLASIA INVOLVING LEFT FOURTH RIB
Adenomyosis. Abnormal uterine margins with contrast penetrating the myometrium.
CHONDROBLASTOMA. Greater Trochanter of the Femur
Neuroblastoma Ganglioneuroblastoma Ganglioneuroma Lymphoma Teratoma Foregut cyst
Thyroglossal duct cyst in a 3-year-old boy. Sagittal (a) and coronal (b) T2-weighted MR images show a hyperintense midline cystic mass of the foramen cecum (arrow).
From left to right: straight flush; pigtail; cobra; and sidewinder. Note the side-ports in some of the catheters.
CAVERNOSOGRAM : VENOUS LEAK
Bankhart injury of the inferior glenoid rim. AP (A) and axillary (B) radiographs in a patient who suffered an anterior shoulder dislocation show an irregularity in the inferior bony glenoid, consistent with a Bankhart fracture (arrow). The shoulder has been reduced. Axial CT (C) from the same patient shows the relationship of the fragment (arrow) to the glenoid.
Segond fracture of the knee. Coronal proton density-weighted MRI demonstrates avulsion of the bony insertion of the iliotibial band (arrow). Avulsions of the lateral collateral ligament complex have a close association with ACL injury.
Colles fracture of the distal radius. Lateral (A) and PA (B) views demonstrate an impacted fracture of the distal radius with dorsal angulation of the distal fracture fragment. The ulnar styloid process is intact
Extraperitoneal pelvic tailgut cyst in a 43-year-old woman. A and B, Axial fat-suppressed T1-weighted (A) and sagittal T2-weighted (B) images through the pelvis demonstrate a well-circumscribed multiloculated lesion (arrows) in the presacral space with variable T1-weighted and T2-weighted signal intensity in loculi due to variable amounts of proteinaceous or hemorrhagic fluid content. Note the incidentally detected uterine adenomyosis on the sagittal image, as manifested by a thickened junctional zone that contains multiple cystic foci corresponding to trapped endometrial glands
PROSTATE METASTASES Most skeletal metastases do NOT produce a soft tissue mass
Development of bladder malignancy within a diverticulum. A, Initial axial CT scan shows a right lateral bladder wall diverticulum (arrow). B, Follow-up CT scan for symptomatic hematuria shows thickening and a mass lesion (arrows) within the diverticulum.
Findings: The left hippocamal formation is smaller than the right side (primarily the body, but also the head and tail somewhat). There is also increased T2 signal intensity of the left hippocampus compared to the right. Incidental note made of changes compatible with small vessel ischemic disease. Mesial temporal sclerosis (this case is pathognomonic with these findings).
Dural arteriovenous fistula. T2W MRI showing multiple enlarged vessels on the posterior surface of the spinal cord
A Malgaigne fracture. Note fractures in the left superior and inferior pubic rami, and in the posterior portion of the left iliac wing adjacent to the sacroiliac joint (arrowheads). There is superior displacement of the left hemipelvis, including the hip.
Fetal hydrops. Longitudinal view of a fetus with skin oedema, ascites and a hydrothorax.
Caroli's ds with central dot sign
corkscrew app.-Cirrhosis-enlarged hepatic a.with tortous branches
CALCIFIED LEFT VENTRICULAR ANEURYSM
Adrenoleukodystrophy-occipital lobe & spelnium of corpus callosum predeliction
adenoca stomach-small irregular stomach with irregular thick folds
Retroperitoneal mixed well-differentiated and dedifferentiated liposarcoma
Mixed laryngocele. Enhanced computed tomography reveals an air-filled laryngocele straddling the thyrohyoid membrane. The internal component (arrowhead) is medial to the hyoid bone (asterisk), and the external component (arrow) is lateral to the hyoid.
Fetal origin of the posterior cerebral artery. A 3D TOF MRA of the circle of Willis shows a fetal origin of the left posterior cerebral artery (arrow), which arises from the left internal carotid artery and is associated with hypoplasia of the left P1 segment.
REVERSE 3 SIGN OF COA
Intracapsular implant rupture. On these T2-weighted fast spin-echo images, the plastic shell of the left breast implant can be seen floating within the silicon, producing a wavy line or linguini sign. Note the presence of a couple of bright dots of water-like material, the salad oil sign
Pigmented villonodular synovitis (PVNS). Coronal T1-weighted MR image showing dark synovial masses due to haemosiderin deposition against a background of degenerative joint disease.