[Rare lung tumors ("sclerosing hemangioma" and "intravascular sclerosing bronchioloalveolar tumor")].

4 observations of rare lung tumours are described: one case of "sclerosing haemangioma" (SH), two cases of "intravascular sclerosing bronchioloalveolar tumour" (ISBT) and one case of asymptomatic disseminated lung lesion considered as angiosarcomatous variant of ISBT with a stroma amyloidosis (it differed from classical ISBT in former observations). Although the necessity of differential diagnosis of SH and ISBT is indicated in the literature, the comparative study of these tumours shows them to be completely different morphologically.