Prev
GYN Menu
PathWeb Home
©
Feed Back
About
Next
Monochorionic Monoamniotic Twin Placenta
Etiology

unknown
Pathogenesis

result of monozygotic twinning with separation after the development of pole,
Epidemiology

monygotic twinning relatively steady in all populations at 3.5/1000.
General Gross Description

chorionic surface with insertion of two umbilical cords
no dividing membrane
single amniotic sac
superficial anastamoses may be evident between circulations
•Examples:
Monochorionic-Monoamniotic Twin Placenta Monochorionic Monoamniotic Twin Placenta Monochorionic Monoamniotic Twin Placenta Monochorionic Monoamniotic Twin Placenta
General Microscopic Description

unable to discriminate between villi of twins
no dividing membrane
•Examples:
References

Cotran RS, Kumar V, Robbins SL: Robbins Pathologic Basis of Disease. 5th ed. Philadelphia, W.B. Saunders, 1994, pp. 1078
Benirschke K, Kaufmann P. Pathology of the human placenta, 3rd ed. New York: Springer-Verlag, 1995, pp. 719-33.

For Most Current Information Search Medline at National Library of Medicine
This link will directly take you to the relevant new literature
Monochorionic Monoamniotic Twin Placenta
Synopsis by: Melinda Sanders M.D. (T88100M29050)[53]
Prev
PathWeb Home
©
Feed Back
About
Next