1987 Volume 78 Issue 5 Pages 828-833
Pathological classification was performed on 11 cases of urachal carcinoma encountered at the departments of urology of both Kumamoto University School of Medicine and Medical College of Oita from 1963 to 1985.
They were classified into transitional cell carcinoma (3 cases), transitional cell carcinoma with adenocarcinoma (5 cases) and adenocarcinoma involving anaplastic type (3 cases),
We frequently encountered many transformation and combination of transitional cell carcinoma and adenocarcinoma in different portions of the tumor or even in the same microscopic field.
