Oct 12

History (HX):
Pain and swelling of the right elbow and right ankle / clinical history of hemophilia, Male 13 yr

Findings:
-Hemosiderin deposing in synovial membrane around these joints low signal on both T1W and T2WI
-Subchondral and intraosseous cysts. Most of them high signal on T2WI and low signal on T1WI compatible with nonhemorrhagic fluid and some are low signal on both T1WI and T2WI representing fibrotic tissue and hemosiderin
-Small cortical erosions

Diagnostic (DX):
Hemophilic arthropathy

Discussion:
The differential diagnosis of synovial-based lesions hypointense on T2WI includes PVNS, GCT  of tendon sheath, synovial chondromatosis, hemophilic arthropathy, amyloid , longstanding RA and siderotic synovitis

Oct 12

History (HX):
Palpable mass at right buttock and severe local pain history of fibromatosis at distal right thigh, Male 21 yr

Findings:
Relatively large mass at right buttock (within the gluteus maximus) with irregular margins which contains low signal  foci on both T1WI and T2WI fs

Diagnostic (DX):
Fibromatosis

Discussion:
The fibromatoses are a group of soft tissue lesions characterized  by proliferation of fibroblasts in an abundant collagen matrix and are prone to recurrence after surgery

Oct 12

History (HX):
Pain, swelling and irritation following IM  injection (vaccination) at left thigh at birth, Female   3 months

Findings:
Thigh MRI shows,  a large fluid-filled cystic lesion within the quadriceps femoris muscle with internal septations, perilesional edema and thick irregular enhancing wall and enhancing septations.
No evidence of osteomyelitis

Diagnostic (DX):
Abscess formation (proved with surgical drainage)

Oct 12

History (HX):
Dementia and progressive memory loss under treatment

Female   65yr

Findings:
Brain MRI shows diffuse cortical atrophy more prominent   in the temporal lobes with temporal horn dilatation (more than 3 mm in diameter) and dilatation of choroidal-hippocampal fissure complex

Diagnostic (DX):
Alzheimer disease (dementia Alzheimer type or DAT)

Discussion:
AD is the most common dementing disorder. Increases in ventricular size, sulcal size, sylvian fissures size and total CSF volume are noted in patients with DAT compared with age-matched control subjects. Atrophy increases over time. The subiculum of the parahippocampal region appears to be most severely affected in DAT.

Oct 12


History (HX):

Female   61yr

Findings:
MIP images of contrast enhanced MRA of neck demonstrate complete obstruction of the left internal carotid artery just above its origin. Mild stenosis at proximal portion of the right ICA also noted.

Diagnostic (DX):

Thrombotic obstruction of the left ICA

Oct 12

History (HX):
RUQ pain and obstructive jaundice, Male   67yr

Findings:
MRCP (MIP and thick slab images) show:
Mild to moderate dilatation of the intrahepatic bile ducts and proximal CHD with a stenotic segments at insertion site of cystic duct
The gallbladder is contracted and contains a gallstone

Diagnostic (DX):
Extrahepatic cholangiocarcinoma (proved)

Oct 01

History (HX):
Trauma during sport, Male   36yr

Findings:
Axial T2WI show edema at anterior fascial compartment. Absence of the biceps tendon at the  level of the radial head (its normal distal attachment site) is seen and at upper axial cuts an abnormally thickened and retracted biceps tendon is seen.

Diagnostic (DX):
Biceps tendon tear

Discussion:
The biceps tendon has two muscular components proximally consisting of a short head attaches to the coracoid process and a long head that attaches to the superior glenoid labrum. These two muscles fuse at upper portion of the arm and have a single distal attachment at the radial tuberosity

Oct 01


History (HX):
Palpable lesion at sublingual region, Female 27yr

Findings:
Cystic lesion at right sublingual region high signal on T2 fs and low signal on T1WI

Diagnostic (DX):Simple Ranula

Discussion:
Simple Ranula: Retention cyst resulting from trauma or inflammation of sublingual gland or minor salivary gland with epithelial lining , located above mylohyoid muscle.
Diving Ranula: When simple ranula becomes large, ruptures out posterior into submandibular space creating pseudocyst lacking epithelium lining

Oct 01

History (HX):
Unilateral nasal obstruction and epistaxis, male 14yr

Findings:
Large mass in right nasopharyngeal masticator space with intermediate signal intensity and multiple small flow voids within the mass indicating hypervascularity and diffuse enhancement

Diagnostic (DX):Juvenile angiofibroma (proved)

Oct 01

History (HX):
Hypothyroidism,male   9yr

Findings:
The pituitary gland is small and hypoplastic. The normal bright spot of the pituitary gland is ectopic and located at proximal portion of the infundibulum.

Diagnostic (DX):
Congenital pituitary deficiency disorder