UCLA Radiological Sciences Proceedings

Osteosarcoma is a primary bone malignancy that disproportionately affects young patients and often metastasizes to the lungs. We report a case of osteosarcoma with metastatic disease in the lungs of a patient who presented with a spontaneous pneumothorax. We briefly discuss the mechanisms of secondary spontaneous pneumothorax, the mechanisms of pulmonary tumor emboli, and the diagnosis of calcified lung nodules in patients with osteosarcoma.

Venous malformations (VMs) are rare congenital vascular anomalies characterized by clusters of dilated veins that can occur in various locations, including the skin, muscles, and internal organs. It is uncommon for these anomalies to be initially identified and described through breast imaging. Most of the reported cases of VMs identified on breast imaging have been detected within the pectoralis muscle and breast parenchyma. We present a unique case of an axillary VM identified in an asymptomatic woman during routine breast imaging and argue that, because of the risks of operating on VMs, this case highlights the importance of considering VMs in the differential diagnosis of non-lymph node axillary lesions to avoid unnecessary invasive procedures.

Amiodarone is an effective class III antiarrhythmic medication, the use of which is limited by its potentially severe side effects and toxicities. When amiodarone pulmonary toxicity (APT) is suspected in patients, amiodarone use should be discontinued. We report a case of APT, with a description of the clinical presentation and radiologic manifestations of the disease and a literature review of purported pathophysiology and treatment.