Recurrent anti-TIF1γ-positive dermatomyositis coexisting with postoperative parotid lymphoepithelial carcinoma: a case report with pathogenesis analysis
BackgroundAnti-TIF1γ-positive dermatomyositis (DM) is a classic paraneoplastic syndrome in adults, but its coexisting with lymphoepithelial carcinoma (LEC) of the parotid gland is exceptionally rare. This rarity poses significant challenges for clinica…