Lash egg=result of Salpingitis. Not tissue. Think internal bumblefoot. It is the hen's body's attempt at walling off a viral or bacterial infection that either originated or entered the the ovaduct from the left bronchial. This "stuff", lump, in the center is pus, not egg. (again think of the "core" in a bumblefoot). Our own bodies do the same around a sliver or other foreign body. This is just happening in the reproduction system. Not always a death sentence for the hen but often is. If she recovers she may or may not ever lay normally again. Occurs far more often in hens engineered to be laying machines, sex-links etc. and those not allowed to take the winter off from laying. Do your own research, just be careful to go beyond "bloggers" and look at research done by veterinary professionals. It is an area that isn't well understood for the most part because remember, until we came along, most hens were in food production in one way or another and rarely lived past their second year.
