View source for 38. Hydatidiform mole

[[File:Hydatidiform mole - overview.png|thumb|Overview. At the marked rectangle you can easily compare normal and abnormal villi side by side.|315x315px]]'''Staining''': HE

'''Organ''': Placenta?

'''Description''':

Both abnormal and normal chorionic villi are present, indicating that this is a partial hydatidiform mole.

The abnormal villi show hydropic swelling, making them much larger than normal villi. They also have a loose, myxomatous and oedematous stroma.

Alternatively, it's a complete mole because of lack of foetal elements and the relatively severe atypia.

'''Diagnosis''': Partial or complete hydatidiform mole ''(my teacher said partial, others apparently say complete)''

'''Risk factor:'''

* Asian countries
* Women < 20 or > 40

'''Theory''':

Partial hydatidiform moles usually contain some foetal cells but we do not have to recognize those.
[[File:Hydatidiform mole - abnormal villus.png|thumb|Abnormal chorionic villus|left]]
[[File:Hydatidiform mole - villus comparison.png|thumb|Normal vs abnormal villus]]
[[Category:Pathology 2 - Histopathology slides]]