IVBAT


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IVBAT

Intravascular bronchiolar and alveolar tumor, interstitial vascular sarcoma A rare tumor of ♀ presenting as multifocal slowly-growing intrapulmonary nodules that mimic pulmonary metastases; first described as a variant of bronchoalveolar cell carcinoma, IVBAT is a neoplasm a sui generis caused by vascular proliferation Clinical Asymptomatic or minimal SOB, 40% of Pts are
< 30 yrs old; 50% of Pts die of disease, 25% within 1st yr; it may be due to endotheliomatosis or identical to epithelioid hemangioendothelioma Imaging Multiple bilateral pulmonary nodules < 2 cm in diameter