[Intravascular sclerosing bronchoalveolar tumor--additional ultrastructural details].

A case of intravascular sclerosing bronchioloalveolar tumour was the 11th one studied by electron microscopy. Tumour cells were full of myofilaments with few and not quite typical Weibel-Palade bodies. It was an abundance of contractile proteins in cells that may have resulted in observed nemaline body-like structures, paracrystalline inclusions and a crystal combined with leptomeric fibrils.