POPLITEAL ARTERY ANEURSYMS

Sagittal T-1 MRI Popliteal art aneurysm


Popliteal artery aneursyms are the most common peripheral artery aneursyms. These occur most frequently in men around 65 years of age. There is known cause for popliteal artery aneursyms, but patients with arthersclerosis, are smoker, or have diabetes are more likely to have them. Also, patients with AAA have a greater probaility to have popliteal artery aneursyms. Bilateral aneursyms are most common. Cramping and leg pain often occur in the calf below the aneursym. The popliteal artery aneursym can be felt as a pulsatile mass in the popliteal fossa. Ultrasound, CTA, MRA are used to detect popliteal artery aneursyms. Surgery is preformed to repair the aneursym by grafting.

PARALABRAL CYSTS

T2-weighted axial image reveals

mass of fluid signal intensity (arrow)

in suprascapular notch consistent

with paralabral cyst.

Paralabral cysts are most common type of shoulder cysts found. There are three types of paralabral cysts: ganglion, synovial, and pseudocysts. When paralabral cysts are found they are associated with a torn glenoid labrum. The tear of the capsulolabral complex is caused by trauma to the shoulder. Unilocular of mutilocular cysts can occur due to the leakage of synovial fluid into the joint from associated trauma. Paralabral cysts can occur at any age. Most patients complain of pain or decreased range of shoulder motion. Plain radiographs do not detect paralabral cysts. MRI‘s are preformed and detect paralabral cysts hyper-intense area on T-2 weighted images and a hypo-intense area on T-1 weighted images. Cyst aspirations, surgery to remove cyst, and repair of gleniod labrum tears are most common treatments for paralabral cysts. Patients then follow up with physical therapy and return to their normal activies.