KEY FACTS Imaging • Typically, unilocular, thin-walled cyst • Anechoic content with posterior acoustic enhancement • Echogenic foci with comet-tail artifacts are characteristic ○ Represent suspended colloid aggregates • Hemorrhage…
KEY FACTS Imaging • Round or oval, well-circumscribed, solid mass • Typically 1-3 cm in size • Most are hypoechoic to thyroid and homogeneous • Some show cystic degeneration •…
KEY FACTS Terminology • Cyst originating from wolffian duct in mesosalpinx or broad ligament • Synonym: Paratubal cyst Imaging • Transvaginal ultrasound is study of choice • Round or oval…
GROSS ANATOMY Vessels of Leg • Popliteal artery ○ Begins as continuation of superficial femoral artery after it has passed through adductor hiatus (inferior end of adductor canal) ○ Runs…
KEY FACTS Terminology • Peritoneal spread of tumor from epithelial malignancy resulting in peritoneal thickening, omental infiltration, serosal implants, and ascites Imaging • Implants develop where peritoneal fluid collects: Dome…
KEY FACTS Terminology • Hindbrain compression with cerebellar herniation through foramen magnum • Open spina bifida present in almost every case Imaging • Posterior fossa compression is key finding ○…
KEY FACTS Imaging • Characterization of plaques ○ Uniformly echolucent or predominantly echolucent; fatty or fibrofatty; ↑ risk of embolization ○ Uniformly/mildly echogenic and predominantly echogenic; fibrous; ↓ risk of…
KEY FACTS Imaging • Congenital diaphragmatic hernias (CDH) are most commonly left sided (80-90% of cases) through posterior foramen of Bochdalek ○ Stomach usually in chest ○ Deviation of heart…
KEY FACTS Terminology • Inflammation of epididymis &/or testis Imaging • Grayscale US ○ Epididymis enlarged and hypoechoic ○ Testes mildly heterogeneous • Color Doppler US ○ Diffuse or focal…
KEY FACTS Terminology • Synonyms: Peritoneal pseudocyst, benign cystic mesothelioma • Not true cyst but peritoneal or ovarian fluid trapped by peritoneal adhesions Imaging • Unilocular or multilocular pelvic cystic…
