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Urethral Diverticulum

KEY FACTS Terminology Focal outpouching of urethra into adjacent fascia Most arise from posterolateral wall of middle 1/3 of urethra You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Urethral Stricture

KEY FACTS Terminology Narrowing of urethra due to scar tissue or tumor You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Adenocarcinoma

KEY FACTS Terminology Primary gland-forming carcinoma of urinary bladder 1/3 are associated with urachal remnant (urachal type) Imaging Predilection for bladder base and urachus (urachal remnant) Tumor may present as heterogeneous mass or irregular focal or diffuse bladder wall thickening Most tumors are mixed solid and cystic Cystic component is due to mucin (which is T2 hyperintense on MR) ~ 70% of cases have calcification Extravesical…

Squamous Cell Carcinoma

KEY FACTS Terminology Malignant epithelial neoplasm with pure squamous cell phenotype You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Bladder Inflammatory Pseudotumor

KEY FACTS Terminology Polypoid bladder mass caused by nonneoplastic proliferation of myofibroblasts and inflammatory cells Depending on predominant inflammatory cell in lesion, it might have different names You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Bladder Trauma

KEY FACTS Terminology Injury due to blunt, penetrating, or iatrogenic trauma Imaging Extravasation of contrast-opacified urine at cystography (CT or conventional): Almost 100% accuracy Contusion (type 1) Ecchymosis of localized segment of bladder wall Intraperitoneal rupture (type 2) Opacified urine in peritoneal spaces (pouch of Douglas), outlining bowel loops & intraperitoneal viscera Requires surgical repair Interstitial injury (type 3) Intramural tear with intact serosa Extraperitoneal rupture…

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Congenital Overview

Summary Thoughts: Congenital Lesions of Head and Neck Neck masses are a common indication for imaging the pediatric H&N. The majority of neck masses in children are either congenital or inflammatory in origin, with only 5% of childhood neoplasms occurring in the H&N. The most common extrathyroid, nonneoplastic solid neck masses in children are related to inflammatory disease and do not require imaging unless there is…