Villous pattern is lost in
Choriocarcinoma : On histopathology , it is composed of cells of early cytotrophoblast and synctiotrophoblast There are no villi Has ability to metastatic Most common mode of spread is hematogenous Ref: Dutta Obs 9e pg 187.
Hydatidiform mole
Invasive mole
Tubal mole
Choriocarcinoma
General obstetrics