radiology imaging medicine medstudent radstudent mri ct diagnosis diagnostic imaging medical imaging x ray ultrasound whirlpool sign urinoma education learning medschool imaging findings angiography epistaxis angiofibroma mucocele vision loss optic nerve neurology rhinosinusitis tirads cancer thyroid cystic hygroma malformation glomus tympanicum paraganglioma metaphyseal corner fracture child abuse fracture acetabulum pincer type cam type acetabular retroversion coxa magna hip impingement radiograph functional cyst ovarian cyst gi bleeding target sign intussusception ectopic gastric mucosa omphalomesenteric duct meckel diverticulum hydronephrosis megaureter bladder obstruction voiding cystourethrogram keyhole sign posterior urethral valve nephroblastomatosis claw sign venous invasion nephroblastoma wilms tumor afp hepatoblastoma brida disida echogenic cord absent gall bladder neonatal jaundice biliary atresia central dot sign cholangiocarcinoma choledochocele pancreaticobiliary maljunction todani caroli disease choledochal cyst feeding intolerance pneumatosis pneumoperitoneum premature necrotizing enterocolitis nec bilious vomiting beak sign volvulus malrotation chest xray air trapping recurrent pneumonia expiratory film aspiration foreign body rib splaying mibg scan thoracic neuroblastoma ovarian torsion adnexal torsion metastases signet ring cell krukenberg leiomyomatosis leiomyoma uterus hematoma pseudoaneurysm active bleeding multiphase ct kidney renal trauma small bowel obstruction
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