- Cowden's disease diagnosed through mucocutaneous lesions and gastrointestinal polyposis with recurrent hematochezia, unrevealed by initial diagnosis. Kato, M., Mizuki, A., Hayashi, T., Kunihiro, T., Nagata, H., Tsukada, N., Orikasa, H., Morinaga, S. Intern. Med. (2000)