For thirty years, a West Bengal woman led a normal life with no complications, until recently, when doctors, while treating her for abdominal pain, discovered that she was a 'man' suffering from testicular cancer. Surprisingly, her 28-year-old sister, who underwent necessary tests following the revelation, was also diagnosed with 'Androgen Insensitivity Syndrome' - a condition in which a person is born genetically male, but has all physical traits of a woman. The 30-year-old Birbhum resident, married for the last nine years, had visited city-based Netaji Subhas Chandra Bose Cancer Hospital with severe pain in lower abdomen a couple of months ago, following which clinical oncologist and surgical oncologist conducted her medical tests, and found out her 'true identity'. After test reports suggested that the person has a 'blind vagina', doctors decided to conduct Karyotyping test, which revealed that her chromosome complement was 'XY' and not 'XX', as found in a woman. Doctor said, 'We conducted clinical examinations, after she complained of abdominal pain, and found out she has testicles inside her body. A biopsy was conducted, following which she was diagnosed with testicular cancer, also called seminoma.' Currently, she is undergoing chemotheraphy and her health condition is stable.