Pulmonary metastasis of polymorphous low-grade adenocarcinoma of the minor salivary gland.

A surgical case of pulmonary metastases of polymorphous low-grade adenocarcinoma (PLGA) originating from the minor salivary gland in the soft palate in a 62-year-old woman is reported. PLGA has been to be a locally invasive carcinoma without distant metastases; thus our case is the first reported case with histologically-proven distant metastases to the lung. We emphasise that attention should be paid to distant metastases especially to the lung even in case of PLGA.