Pericardial Hemangioma Presenting as Thoracic Mass in utero
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Pericardial hemangiomas are rare lesions. We present the case of an infant who was referred to our fetal diagnosis and treatment group for the presence of a left thoracic mass, pleural effusion, and mediastinal shift on fetal ultrasound. The characteristics of the lesion suggested the presence of a pulmonary sequestration. A chest radiograph done at birth was normal. At 2 weeks of age, an enhancing lesion of the left pericardium was identified on chest CT. A cardiac MRI demonstrated enhancement of the mass on T2-weighted images. The patient underwent thoracoscopic assessment of the mass for diagnostic purposes. Multiple lesions were identified along the left pericardium and diaphragm. A frozen section biopsy revealed a hemangioma. The natural history for hemangiomas is gradual regression; however, they may increase acutely in size and cause symptoms prior to involution. Investigations should be performed to identify the involvement of other organs. This case illustrates the need to closely follow all patients with prenatally diagnosed thoracic masses with CT imaging, even when they are asymptomatic and have a normal chest radiograph at birth.
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