Feb 08
History (HX):
Epilepsy for 10 years
Male 33 yr
Findings:
Multiple small subependymal nodules lining the lateral wall of the lateral ventricles which show same signal intensity as cortex (GM)Diagnostic (DX):
Nodular subependymal heterotopia
Discussion:
Contrast enhanced MRI is recommended to R/O remote possibility of Tuberous Sclerosis
Feb 08
History (HX):
Palpable mass and pain during a few months
Male 39 yr
Findings:
Large well-marginated solid and cystic mass in lower abdomen and pelvis behind the urinary bladder and above the rectum suggestive of a retropritoneal mass.
The solid components of the mass shows marked enhancement on post-Gd images.
Diagnostic (DX):
Low grade spindle cell sarcoma in favour of schwannoma (proved)
Feb 08
History (HX):
Known case of breast cancer (preoperative)
Female yr
Findings:
A relatively large mass with irregular, spiculated margin in UOQ of right breast with heterogeneous increased signal intensity on T2WI. On dynamic post-contrast images the mass shows thick irregular rim enhancement with type III (rapid-washout) time intensity curve
Diagnostic (DX):
Invasive ductal carcinoma (biopsy proven) in right breast BIRADS VI
Discussion:
Dynamic contrast enhanced MRI of breast is increasingly used as an adjunct to mammography and US to improve the detection and characterization of primary and recurrent breast cancers and for evaluation of the response to therapy. It is also useful for detecting multifacality and multicentricity of breast cancer
Feb 08
History (HX):
Known case of breast cancer
Female 48yr
Findings:
Numerous variable sized enhancing masses in cerebral and cerebellar hemispheres mainly at corticomedullary junction as well as dural and leptomeningeal enhancement and mild to moderate communicating hydrocephalus
Diagnostic (DX):
Brain metastases and carcinomatose
Feb 08
History (HX):
Right flank pain
Female 34yr
Findings:
On KUB a calcified lesion with irregular margin at right side of pelvis with a barely visible surrounding lucent mass. Following IV injection of contrast medium a well-defined fat-containing mass with a calcified component (tooth?) at right side of pelvis causing extrinsic pressure effect upon the urinary bladder
Diagnostic (DX):
Dermoid cyst of right ovary (incidental finding in IVP)
Feb 08
History (HX):
Paresis and pain of right upper extremity after trauma (2 months ago) and fracture of right clavicle
Male 74yr
Findings:
A displaced bone fragment is pressing on the retroclavicular part of the Brachial plexus. Narrowing of the costoclavicular space is seen with impingement on the Brachial plexus by the malunited fragments
Diagnostic (DX):
Fractured clavicle with Brachial plexus injury
Discussion:
Clavicular fractures are occasionally responsible for lesions of the Brachial plexus. The symptoms are usually delayed and due to compression by hypertrophic callus, nonunion or a subclavian pseudo aneurysm
Feb 08
History (HX):
Paresis of both upper limbs and right lower limb
Male 75yr
Findings:
Sagital and axial T2WI show symmetric, longitudinally ariented zones of high signal intensity involving the dorsal columns of the spinal cordDiagnostic (DX):
Subacute combined degeneration of the spinal cord (SDC of the spinal cord)
Discussion:
Intramedullary signal abnormalities can resolve after correction of the vitamin B12 deficiency
Feb 08
History (HX):
Pelvic mass Female 45yr
Findings:
A large 100 x 85 mm adnexal mass high signal on T1WI and diffusely low signal on T2WI with fat suppression
Diagnostic (DX):
Ovarian teratodermoid
Feb 08
History (HX):
Left hemiparesis for a few weeks
Male 51yr
Findings:
Large left paraspinal mass with cystic component and intraspinal extension through the neural foramina causing pressure effect upon the thecal sac and spinal cord, as well as similar lobulated masses involving the pleura and chest wall (ribs) posteriorly
Diagnostic (DX):
Hydatid disease (proved after surgery)
Discussion:
Feb 08
History (HX):
Metastatic adenopathy in left axillary region with no detectable mass in US and mammography
Female 47yr
Findings:
A 18 x 14 mm mass with lobulated, irregular margin at retroareolar region of left breast high signal on T2WI , low signal on T1WI and rapid washout enhancement (type 3 time intensity curve)
Diagnostic (DX):
Invasive ductal carcinoma in left breast
Discussion:
MR images can be helpful in identifying breast cancer that is mammographically and sonographically occult such as this case with known metastatic left axillary adenopathy and negative mammography and US
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