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Ureteropelvic Junction Obstruction

KEY FACTS Imaging Marked pelvocaliectasis that ends abruptly at ureteropelvic junction (UPJ) with normal caliber ureter downstream Dilated calyces relatively uniform in size & distribution; all connect centrally to disproportionately dilated pelvis Thinned but otherwise intact renal parenchyma Severity of delayed nephrogram, excretion, & collecting system drainage (on IVP, CECT, MRU, or nuclear renal scan) depends on degree of obstruction Contrast entering dilated collecting system (by…

Approach to Pediatric Genitourinary Tract

Genitourinary Tract Imaging Modalities Radiographs Plain radiographs are rarely utilized in the evaluation of the pediatric GU tract due to their low sensitivity for GU pathology. Associated pathologic calcifications may be incidentally detected, including urinary tract calculi, teratomas (which may resemble a tooth), & remote adrenal hemorrhages. Ultrasound is typically the next step in each of these scenarios. You’re Reading a Preview Become a Clinical Tree…

Bezoar

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Pancreatitis

KEY FACTS Terminology Acute pancreatitis (AP): Acute inflammation of pancreas with variable involvement of local tissues/remote organs 2 of 3 features required for diagnosis: Abdominal pain consistent with disease, 3x rise in serum amylase or lipase, or imaging findings consistent with AP 2 types of AP: Interstitial edematous vs. necrotizing Fluid collections – Pancreatic pseudocyst: Fluid collection associated with interstitial edematous pancreatitis after first 4 weeks…