Teaching point: Unexplained bone marrow edema on MRI warrants further investigation with CT to demonstrate a nidus which is pathognomonic for an osteoid osteoma.
Teaching point: Unexplained bone marrow edema on MRI warrants further investigation with CT to demonstrate a nidus which is pathognomonic for an osteoid osteoma.
Teaching point: Narrowing of the intervertebral space and destruction of the adjacent vertebral end plates on conventional radiography or CT should raise suspicion for spondylodiscitis in symptomatic infants.
Teaching point: Cortical diffusion restriction can be depicted by MRI in the early onset of Creutzfeld Jakob disease.
Main Teaching Point: Diagnosing acute ascending aortic dissection in patients with equivocal radiologic data may rely on associated findings such as pulmonary artery intramural hematoma. The immediate diagnosis of aortic dissection is paramount in its management. Its diagnosis may be challenging on computed tomography when the intimal flap, pathognomonic of dissection, is not readily visualized. Pulmonary artery intramural hematoma may arise from rupture of the posterior wall of the ascending aorta into the common aortopulmonary adventitia as a result of acute dissection. The clinical significance of pulmonary artery hematoma is unknown, but its presence may facilitate the diagnosis of acute dissection when other radiologic findings are equivocal. Herein, we present four cases of pulmonary artery intramural hematoma associated with Stanford type A acute aortic dissection, among whom patient outcomes depended mainly on the prompt treatment the dissection.
Teaching point: A trichobezoar is a relatively rare entity that presents on imaging as a heterogeneous and multilayered mass molded by the stomach lumen.
Teaching Point: The advantages of CT over other imaging techniques for the diagnosis of acute appendicitis in adults include the ability to identify foreign bodies that may be involved.
Teaching Point: Bicompartmental bucket handle meniscal tears are very rare occurrences that can result in menisci fragments superimposition in the intercondylar notch, referred to as the triple posterior cruciate ligament sign.
Teaching Point: Neurotoxoplasmosis should be part of the differential diagnosis for single or multiple cerebral lesions in hematologic patients.
Teaching Point: Translucent metaphyseal lines in children warrant further analysis to rule out malignancy.
Teaching Point: Segmental arterial mediolysis is a rare cause of acute abdominal pain due to dissection and/or aneurysm formation in visceral arteries with subsequent stenosis, occlusion, or haemorrhage.
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