Hello,
There are very few structures that are similar in size and shape to the vas deferens. A vein can resemble the vas but does not have the cordlike feel that the vas has. Still, it is the only structure that an be cut by mistake.
The pathologist should be able to tell you what structure was cut - a microscopic examination will show whether it was a blood vessel , a ligament, a roll of tissue or anything else. An examination of the semen will also show whether the vas or some other structure was cut.
I hope this helps.
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Experienced in the management of Pregnancy,Infertility,Menopause and all problems in Pregnancy and Gynecology