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  • Title: Epithelioid hemangioendothelioma of the lung: CT findings and clinical course of 35 cases.
    Author: Onishi Y, Kusumoto M, Goto Y, Kaku S, Motoi N.
    Journal: Jpn J Clin Oncol; 2020 Sep 28; 50(10):1195-1200. PubMed ID: 32607550.
    Abstract:
    OBJECTIVES: To evaluate computed tomography findings and assess the clinical course of patients with pulmonary epithelioid hemangioendothelioma. METHODS: Patients diagnosed with pulmonary epithelioid hemangioendothelioma at our institution between 2000 and 2019 were retrospectively analyzed. Patients with pleural involvement were excluded. Computed tomography findings of the lung at diagnosis were classified into three patterns: multiple small nodules pattern (˂15 mm), multiple nodules with large lesions pattern (≥15 mm) and single lesion pattern. Additionally, the clinical course of patients was evaluated. RESULTS: Thirty-five patients (15 men and 20 women; median age, 44 years) with pulmonary epithelioid hemangioendothelioma were identified. The multiple small nodules pattern, multiple nodules with large lesions pattern and single lesion pattern were observed in 25 (71.4%), 8 (22.9%) and 2 (5.7%) patients, respectively. In 22 (62.9%) patients, extra-pulmonary epithelioid hemangioendothelioma lesions were found. Most patients were followed without initial treatment, while two patients with single lesion pattern underwent surgical resection. The median follow-up period was 63 months. Five-year overall survival rate of all patients was 96.3%. Latest clinical information revealed that 20 (20/25, 80%) patients with multiple small nodules pattern were alive without symptoms. In patients with multiple nodules with large lesion pattern, four (4/8, 50%) patients were alive without symptoms, three (3/8, 37.5%) patients were alive with symptoms and one (1/8, 12.5%) died. No recurrence was observed in patients with single lesion pattern. CONCLUSIONS: Multiple small nodules pattern was the most common findings of pulmonary epithelioid hemangioendothelioma. Patients with pulmonary epithelioid hemangioendothelioma have good prognosis.
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