Radiology Key

KEY FACTS Terminology • Failure of closure of lower abdominal wall resulting in exposed bladder Imaging • Inability to demonstrate fluid-filled bladder • Soft tissue mass/nodular contour of lower anterior…

KEY FACTS Terminology • Lethal malformation characterized by attachment of viscera to placenta with short or absent umbilical cord Imaging • Gross distortion with complete loss of anatomic landmarks •…

KEY FACTS Terminology • Membrane-covered midline abdominal wall defect with herniation of abdominal contents into base of cord Imaging • Liver + small bowel is most common type (large defects)…

KEY FACTS Terminology • Bowel herniates through right-sided abdominal wall defect next to normal umbilical cord insertion site • Newborn classification of gastroschisis ○ Simple: Isolated, no other bowel anomalies…

KEY FACTS Terminology • Cleft lip (CL) occurs ± cleft palate (CP) ○ > 80% of fetuses with CL also have CP • Variable classifications, best to be descriptive about…

KEY FACTS Terminology • Cystic lymphatic disorder involving back and side of neck causing multiseptated fluid-filled mass Imaging • Cystic hygroma (CH) is typically large ○ Multiple internal septations is…

EMBRYOLOGY Bowel Development • Gastrointestinal (GI) tract forms from 1 straight tube ○ Foregut : Forms esophagus, stomach, and duodenum ○ Midgut : Small intestine and colon up to splenic…

KEY FACTS Terminology • Synonym: Popliteal cyst Imaging • Fluid distention of semimembranosus-medial gastrocnemius bursa • C-shaped cyst usually anechoic, thin walled, and well defined • Isoechoic or hyperechoic material…

KEY FACTS Terminology • 2 types of intrauterine devices (IUDs) in USA ○ Copper containing ○ Levonorgestrel releasing • Device inserted into endometrial cavity to prevent pregnancy • T-shaped polyethylene…

KEY FACTS Imaging • Transvaginal sonography study of choice for initial work-up of abnormal vaginal bleeding • Endometrial thickening: Focal more suspicious than diffuse • Polypoid masses with internal color…