Pulmonary tumor thrombotic microangiopathy (PTTM) is a paraneoplastic syndrome associated with mucin secreting adenocarcinomas. usually gastric. Mucin secretion releases the coagulation cascade and activates endothelial growth factors. causing thrombosis and endothelial proliferation with secondary luminal stenosis. https://www.roneverhart.com/Sheepshead-Bay-Boats-2-Brooklyn-NY/