[2 cases of bullous pemphigoid and Bowen's disease associated with esophageal cancer].

There are many published reports on the combination of malignant tumors of the digestive tract and various skin diseases. To date, 8 cases with combined bullous pemphigoid and malignant tumor, or Bowen's disease and malignant tumor, have been reported in Japan. In only 2 cases was the esophageal cancer combined with skin disease. The pathophysiological relationship between skin diseases and malignant tumors of the digestive tract remains unknown.