Idiopathic Renal Infarction Mimicking Appendicitis.

Renal infarction is a rare cause of referral to the emergency department, with very low estimated incidence (0.004%-0.007%). Usually, it manifests in patients aged 60-70 with risk factors for thromboembolism, mostly related to heart disease, atrial fibrillation in particular. We report a case of idiopathic segmental renal infarction in a 38-year-old patient, presenting with acute abdominal pain with no previous known history or risk factors for thromboembolic diseases. Because of its aspecific clinical presentation, this condition can mimic more frequent pathologies including pyelonephritis, nephrolithiasis, or as in our case appendicitis. Here we highlight the extremely ambiguous presentation of renal infarct and the importance for clinicians to be aware of this condition, particularly in patients without clear risk factors, as it usually has a good prognosis after appropriate anticoagulant therapy.

Nontraumatic adrenal hemorrhage: the adrenal stress.

Bilateral adrenal hemorrhage is a rare condition, which is burdened by potentially life-threatening consequences related to the development of acute adrenal insufficiency. Despite treatment with stress-dose glucocorticoids, a mortality rate of 15% has been reported, which varies according to the severity of underlying predisposing illness and could be much more higher if the adrenal insufficiency is not promptly recognized. An early diagnosis is crucial, though, because of nonspecific clinical and laboratory findings, adrenal hemorrhage is rarely suspected. Therefore, imaging has a pivotal role for the diagnosis of this uncommon condition but, despite adrenal hematomas characteristically appear round or oval with peripheral fat stranding, their initial presentation could be ambiguous. The authors describe a case of postoperative bilateral adrenal hemorrhage initially presenting at computed tomography scan as thickening of both glands surrounded by fat stranding, which led to close monitoring of adrenal function before unequivocal hemorrhage developed.

The idiopathic localized tumoral calcinosis: the "chicken wire" radiographic pattern.

Tumoral calcinosis is a rare and benign hereditary tumor-like periarticular calcium deposit. It is painless and it is found commonly around large joints such as hip, shoulder and elbow. The condition predominately affects young black African patients with an equal gender ratio. In this report, a case of primary idiopathic localized tumoral calcinosis in a 22-year-old African man and its distinctive radiographic "chicken wire" pattern was described.