Endometrioid tumor pathophysiology

Gross and Microscopic pathology
On gross pathological examination, the tumour is cystic and may be solid and some arise in cystic endometriosis. In 17% of cases, endometrioid tumours are found bilaterally. Microscopically, there is a resemblance to endometrial carcinoma, and over a third of cases have focal squamous differentiation.