Key Feature Summary for Mucinous Cystadenoma of the Lung:
• Rare benign lung tumor usually found incidentally
• Mean age 60s, slightly more in women
• Mucin-filled cyst lined by bland mucinous epithelium
• No atypia, invasion, or necrosis
• Cytokeratin positive, and TTF1 negative
• Differential diagnosis include: Metastatic adenocarcinoma, colloid carcinoma, bronchogenic cyst.
• Cured by complete surgical excision
