Mucinous adenocarcinoma of minor salivary gland with IPMN-like features.

This salivary mucinous adenocarcinoma with intraductal papillary mucinous neoplasm-like features demonstrates regional lymph node metastases and GNAS amplification. The findings suggest these lesions represent low-grade invasive mucinous neoplasms with secondary ductal extension rather than purely intraductal entities, supporting their classification within the mucinous adenocarcinoma spectrum.