Shigeo Hara

The frequency of malignant transformation in endometriosis is rare; it is estimated to be less than 1%. Malignant transformation mainly occurs in the ovary and rarely in the extragonadal sites. Endometriosis-associated intestinal tumors (EA…

Background: Catamenial pneumothorax (CP) is a relatively rare disease, which is a form of a recurring pneumothorax in women of reproductive age. The actual cause is still unclear. Objectives: To perform histopathologic evaluation of the eti…