Complications of Ileal Conduits after Radical Cystectomy: Interventional Radiologic Management.

Since their introduction into clinical practice in the 1950s, ileal conduits have been the most common type of urinary diversion used after radical cystectomy worldwide. Although ileal conduits are technically simpler to construct than other forms of urinary diversion, a variety of complications can occur in the early and late postoperative periods. Early complications include urine leakage, urinary obstruction, postoperative fluid collection (eg, urinoma, hematoma, lymphocele, or abscess), and fistula formation. Late complications include ureteroileal anastomotic stricture, stomal stenosis, conduit stenosis, and urolithiasis. Although not directly related to ileal conduits, ureteroarterial fistula can occur in patients with an ileal conduit. Interventional radiologists can play a pivotal role in diagnosis and management of these complications by performing image-guided minimally invasive procedures. In this article, the authors review the surgical anatomy of an ileal conduit and the underlying pathophysiology of and diagnostic workup for complications related to ileal conduits. The authors also discuss and illustrate current approaches to interventional radiologic management of these complications, with emphasis on a collaborative approach with urologists or endourologists to best preserve patients' renal function and maintain their quality of life. ©RSNA, 2020.

Intraluminal hyperdense appearance of the small bowel on high resolution computed tomography of the abdomen and pelvis secondary to use of Calcium Carbonate tablets (Tums) mimicking a small bowel fistula.

Hyperdensity within the small bowel is most commonly seen with positive oral contrast agents, intraluminal hemorrhage and less likely an abnormal fistulous connection with the colon containing rectally administered contrast. We present the case of a 57-year-old female with a complex history of breast cancer and multiple abdominal surgeries presenting with intraluminal hyperdense small bowel on computed tomography (CT) performed with rectal contrast. Postsurgical CT with rectal contrast, and no oral contrast, showed multifocal regions of intraluminal hyperdensity with the small bowel anterior to and close to the surgical anastomosis. This raised concerns for a fistula between the colon and small bowel; however, surgical exploration demonstrated an intact anastomosis without a coloenteric fistula. Additional history notes that the patient consumed an increased dose of calcium carbonate tablets for a few days prior to obtaining the scan and this intraluminal hyperdense appearance of the small bowel was then attributed to this. We conclude that ingested over the counter medications can pose an imaging dilemma for radiologists as their appearance on CT could falsely mimic pathology. It is imperative to obtain a thorough clinical history in such cases to provide accurate diagnoses and decrease unwanted imaging and clinical intervention. It is also important for radiologists to be aware of the appearances of commonly consumed over the counter medications that can mimic pathology as demonstrated by this case.

Incidental finding of renal pseudoaneurysm in child with tuberous sclerosis presenting with atypical clinical symptoms.

Tuberous sclerosis (TS) is a complex medical disorder with multisystemic clinical manifestations. Although the renal manifestations of this disease are well researched, the complexities of clinical diagnosis are raised significantly in patients with cognitive impairments, particularly in the pediatric population. We present a case of a 12-year-old male with intellectual disabilities and renal angiomyolipomas associated with his TS complex presenting with subtle cognitive and behavioral changes leading to the eventual diagnosis of a renal pseudoaneurysm. The purpose of this case report is to highlight the subtleties of diagnosis and management of patients with TS and cognitive impairments and maintaining a high clinical index of suspicion for life threatening complications when presenting symptoms are nonspecific. This case also demonstrates the importance of obtaining a thorough clinical history from parents and caregivers of these children and educating them on significance of recognizing changing behavior patterns. The healthcare responsibility for diagnosis and management must be shared by all levels of personnel that participate in the care to allow for improved morbidity, mortality, and quality of lives for these patients.