KEY FACTS Imaging • Cisterna magna (CM) measures > 10 mm on routine posterior fossa view • Cerebellar hemispheres and vermis otherwise normal • Most often normal variant : <…

KEY FACTS Terminology • Congenital heart disease with 4 components ○ Right ventricular outflow tract (RVOT) obstruction ○ Right ventricular hypertrophy ○ Ventricular septal defect (VSD) ○ Aorta overrides or…

TERMINOLOGY Abbreviations • Origin (O), insertion (I) Definitions • Junctional region between thigh and trunk IMAGING ANATOMY Overview • Incorporates lower abdominal wall, inguinal canal, femoral triangle, and femoral adductor…

KEY FACTS Imaging • Exophytic mixed cystic/solid mass extending from sacrum ○ Variable size but often large, with potential for extremely rapid growth ○ Commonly extends into pelvis and abdomen…

KEY FACTS Terminology • Rare catecholamine-secreting tumor arising from chromaffin cells of adrenal medulla • Termed paraganglioma if extraadrenal Imaging • Best diagnostic clue ○ Adrenal mass in setting of…

KEY FACTS Terminology • Exencephaly is early manifestation of anencephaly before neural tissue has worn away Imaging • No calvarium with absence of neural tissue above orbits ○ Neural tissue…

KEY FACTS Imaging • Multiple nodules with bilateral diffuse involvement • Solid nodules most often isoechoic; 5% hypoechoic • Nodules are sharply defined with haloes but may conglomerate • Heterogeneous…

KEY FACTS Terminology • Bronchopulmonary tissue that does not connect to tracheobronchial tree or pulmonary arteries Imaging • Homogeneously echogenic lesion adjacent to diaphragm ○ Typically triangular and well defined…

KEY FACTS Terminology • Complete absence of corpus callosum (CC) • May be partially present but abnormal (dysgenesis) Imaging • Mild ventriculomegaly often 1st clue • Absent cavum septi pellucidi…

KEY FACTS Terminology • Vein of Galen aneurysmal malformation (VGAM) is deep cerebral arteriovenous fistula Imaging • Elongated midline cystic structure ○ Extends from area behind 3rd ventricle posteriorly toward…