Bienvenido Fernandez, who was confined at the Gov. Celestino Gallares Memorial Hospital, said he swallowed the seeds instead of spitting them out after gnawing the fruit's flesh last Tuesday.
Fernadez said he had done this before without feeling ill.
On Wednesday, however, he complained of stomach ache and difficulty in urination, and was brought to the hospital.
An ultrasound was conducted on his stomach and he was scheduled for an operation on Saturday if he was not able to flush out the seeds.