Feb 09
History (HX):
Right hemiparesis, inconsciousness, Ataxia
Female 29 yr
Findings:
A large ICH in left frontal lobe in early subacute phase (low signal on T2WI and high signal on T1WI) with extensive peripheral edema.
Important note a small AVM as seprigenous signal void structures at posterior aspect of ICH
Diagnostic (DX):
Large ICH and SAH at left frontal lobe and a small AVM as the underlying cause
Feb 09
History (HX):
Headache Female 16 yr
Findings:
Cystic mass in right cerebellar hemisphere high signal on T2WI and low signal on T1WI with thin peripheral enhancement and mild surrounding edema.
Mass effect upon the brainstem and the 4th ventricle is noted resulting in obstructing hydrocephalus.
Diagnostic (DX):
Astrocytoma grade 2-3 (proved)
Feb 09
History (HX): Female 15 yr
Findings:
There is a large destructive mass at distal femoral metadiaphysis. Cortical destruction and extensive periosteal reaction with sunburst appearance are present. The mass is in close proximity with neurovascular bundle.
Diagnostic (DX):
Malignant small round cell tumor more probably Ewing sarcoma (proved)
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):
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):
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):
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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