placental lesions

Types

 placental microscopic lesions
 placental macroscopical lesions

Placental microscopic lesions

 placental villous anomalies (placental villous lesions)

• trophoblastic lesions
  • trophoblastic hyeprplasia
  • syncitial knots
  • fibrin deposition
    • focal perivillous fibrin deposition
    • subchorionic fibrin deposition
    • massive perivillous fibrin deposition (MPFD)
    • villous fibrinoid necrosis

• • trophoblastic necrosis
  • anomalies of placental maturation
    • placental maturation acceleration
    • placental maturation delay
    • placental postmaturity

• • placental fibrin deposition

• trophoblastic basement membrane
  • trophoblastic basement membrane thickening
  • trophoblastic basement membrane mineralization

• villous stroma lesions
  • villous stromal fibrosis
  • Hofbauer cells hyperplasia

• anomalies of placental villous vessels
  • placental villous vessels obliteration
  • medial hypertrophy of placental villous vessels
  • intimal thickening of placental villous vessels
  • intimal fibrosis of placental villous vessels
  • hemorrhagic vasculosis
  • thrombosis of placental villous vessels
  • placental villous vasculitis

• placental inflammation (placentitis)
  • amnionitis
    • acute chorioamnionitis

 placentitis

• acute placentitis
• chronic placentitis
  • granulomatous placentitis

• placental fibrosis
  • massive placental fibrosis

See also

 placental macroscopic anomalies

• placental developmental variations
• placental developmental anomalies