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  • Title: Multiple bilateral pulmonary epithelioid hemangioendothelioma mimicking metastatic lung cancer: case report and literature review.
    Author: Xiong W, Wang Y, Ma X, Ding X.
    Journal: J Int Med Res; 2020 Apr; 48(4):300060520913148. PubMed ID: 32314617.
    Abstract:
    Pulmonary epithelioid hemangioendothelioma (PEH) is a rare tumor of low to intermediate malignancy, which originates from vascular endothelial cells. Most patients with PEH are asymptomatic and the tumor occurs most frequently in women. Typical radiologic images of patients with PEH are multiple irregular nodules with punctate calcification and pleural indentation. Here, we describe a 54-year-old woman who presented with multiple bilateral nodules of different sizes and well-defined borders, as well as lung markings, without punctate calcification or pleural indentation. These atypical computed tomography images resulted in misdiagnosis as metastatic lung cancer. Right upper lobe wedge resection was performed; intraoperative frozen pathologic examination suggested that the tumor was benign. However, immunohistochemical analysis revealed the presence of PEH. Subsequently, the patient chose watchful waiting, rather than chemotherapy. This rare case of PEH with atypical computed tomography findings, which was misdiagnosed as metastatic lung cancer, demonstrates that intraoperative frozen analysis is unreliable; thus, histopathological analysis is necessary.
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