The Radiologist Eye
The Eyes sees what the Mind knows.
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LARGE SEGMENT, INCLUDING END OF BONE TRIANGULAR OR "FLAME-SHAPED" OR "BLADE OF GRASS" TERMINATION CORTEX THICK BUT VERY POROUS PAGET DISEASE
DARK SIGNAL (HEMOSIDERIN)
PIGMENTED VILLONODULAR SYNOVITIS (PVNS) : A benign proliferative disorder of uncertain etiology that affects synovial joints, bursae, and tendon sheaths. Patients aged 20-50 years. Monoarticular Knee (about 80% of patients)
HYPERDENSE BASILAR ARTERY THROMBUS
CAROLI DISEASE WTH INTRADUCTAL CALCULI
SPLENIC ARTERY PSEUDOANEURYSM
D/D: ABC/GCT before fusion epiphysis
UB DIVERT WITH CALCULUS
J J INTUSSUCEPTION
Lipoma of the corpus callosum. Extremely low-density mass (open arrows) involving much of the corpus callosum. Note the peripheral calcifications (closed arrows).
Gout-large calcified tophi in olecranon bursa.
B12 Deficiency- Cord & Brain Involvement
There is associated white matter involvement along with posterior column involvement which is relatively less commonly reported in B12 deficiency. This is 51 year old male who is non alcoholic, with possibly dietary deficiency.
Sarcoidosis. (A) Coronal postcontrast T1-weighted image shows abnormal pial enhancement. There is also abnormal enhancement along the perivascular spaces for the lenticulostriate arteries and in the pituitary stalk. (B) Midsagittal postcontrast T1-weighted image (different patient) shows sarcoid deposits (s) in the posterior interhemispheric fissure and in the sella. (C) Axial postcontrast T1-weighted image of a different patient shows dural and masslike (s) sarcoid deposits simulating meningiomas (avascular at angiography).
(A) Nonenhanced scan showing a hypodense mass containing amorphous areas of calcification. (B) After the intravenous injection of contrast material, there is marked contrast enhancement
Teratoma. Axial T2-weighted MR image shows a
because of high fat content and
Cholangiogram & MRCP CDC II
The ribs are widened and display coarse trabeculation consistent
with extramedullary hematopoesis
(red arrow). Hyperemia of the pulmonary circulation is present
1.Sarcoidosis:Great mimicker leptomeningeal,dural & parenchymal lesions. Isointense on T1W images, hypointense on T2W image
2.Leptomeningeal lesions enhance
Posterior shoulder dislocation: Axial CT image of the shoulder
shows the humeral head locked behind the posterior glenoid rim, and adjacent deformity of the anteromedial humeral head indicating a
Reverse Hill-Sachs impaction
fracture (Trough sign).
SOFT TISSUE EXTENSION THROUGH
INTACT CORTEX (PERMEATION)
DENSITY ? CORTEX
CLOUD-LIKE AND LINEAR
PROSTATE METASTASES Most skeletal metastases do NOT produce a soft tissue mass
LCH :Thickened stalk ..T2 hyperintense..Intense enhancement
Parotid sialogram showing
Collections of contrast medium 1-2 mm in diameter are evenly distributed throughout the gland (one has been identified with an
Facial nerve Schwannomas
Retained internal trabeculae
Candida oesophagitis. (A) Mucosal plaques. (B) Extensive mucosal nodularity
Gastric volvulus: supine. Gas-filled, grossly dilated stomach, spherical in outline. Note also the linear gas within the wall of the stomach and visualization of both sides of the stomach wall indicating free gas. At laparotomy a perforated gangrenous stomach had undergone volvulus around its transverse axis.
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).
LT ILIAC ARTERY ANEURYSM
Angiomyolipoma with both well-defined focal and diffuse infiltrating characteristics in a 17-year-old girl with tuberous sclerosis
CT image shows randomly arranged cysts in both lungs IN TS