Parto Teb Azma

History (HX):
Pain and incomplete paralysis of right limb following trauma   Male   22 yr

Findings:
(Dilated nerve root sheath following root avulsion)
Sagital T2WI shows prominent intraforaminal CSF-filled space without characteristic hypointensity of exiting nerve root

Diagnostic (DX):
Multiple right sided nerve root avulsions
(Brachial plexus traction injury  avulsion pseudomeningocele)

Discussion:
Lateral meningocele mimics pseudomeningocele but contains neural elements

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)

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

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

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)

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

Patient ID: 88012026
HX: Pain and palpable bony prominence .male 29y
DX: Osteoid osteoma
Findings:
A small well-defined lesion within the cortex of distal humeral diaphysis with surrounding cortical hyperostosis, a small central nidus, bone marrow edema and perilesional soft tissue edema.
Discussion:
Benign tumor consisting of osteoblastic mass (nidus) surrounded by zone of reactive sclerosis

Patient ID: 88012768
HX: Palpable mass at right upper thigh .female 28yDX: Low grade fibrosarcoma (proved)

Findings:
Relatively large well-defined mass at right upper thigh and right inguinal region high signal on T2WI and isosignal to muscles on T1WI