Fallopian tube problems account for about 25 to 30% of cases of infertility and out of this, about 10 to 15 % are having proximal tubal blockage or corneal block.
Cornute are the parts of the uterus where the fallopian tubes join on each side. Sometimes there is a block there; called the corneal block off the fallopian tube. The corneal block can prevent the entry of the sperm inside the fallopian tubes leading to infertility.
The corneal block of the fallopian tube can be corrected by hysteroscopic tubal cannulation. This leads to the opening up of the blocked fallopian tubes and results in a successful pregnancy.

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