Rare Mucinous Tumors of the Alveolar Space: Two Case Reports

Pulmonary mucinous adenocarcinomas are rare, and the knowledge about them is gleaned from case reports and small case series. To support the growing recognition of these rare tumors, we present two cases: one of a low-grade mucinous tumor and another of a colloid adenocarcinoma to illuminate the underreported differences between these two mucinous tumors.