An 82-year-old woman arrived at a medical facility in Bogota, Colombia, seeking immediate medical care for severe pelvic and stomach pain. Doctors ordered an X-ray to determine the exact cause of her distress. When the radiography results appeared, the medical staff found something entirely unexpected inside her abdomen. The elderly patient was carrying a fully formed, calcified fetus that had been trapped inside her body for four decades.
The Biology of a Stone Baby
The medical team officially diagnosed the Colombian woman with a lithopedion. This rare condition is also known as a stone baby. According to the Canadian Medical Association Journal, as cited in the CBS News report, this phenomenon occurs when a pregnancy develops in the abdomen rather than inside the uterus. The ectopic fetus lacks the necessary blood circulation to survive and ultimately expires.
Because the resulting fetus is too large for the mother’s body to expel or absorb naturally, the human immune system recognizes it as a foreign object. To protect the woman from severe infection, the body initiates the exact same biological process it uses when knee cartilage calcifies. The immune system slowly encases the deceased fetus in extra calcium buildup. The protective shell hardens, turning the biological tissue into stone and isolating it from the rest of the internal organs.
Decades of Undetected Concealment
Most women who experience a lithopedion never realize they were even pregnant. The calcification of the tissue means the mass can remain entirely undetected for years. In this specific case, the fetus remained situated inside the Colombian woman for exactly 40 years without causing symptoms.
Dr. Kim Garcsi, who directs the ob/gyn clerkship program at University Hospitals Case Medical Center in Cleveland, stated that patients often live entirely asymptomatic lives. The Colombian woman went about her daily routines completely unaware of the medical condition in her abdomen. She only discovered the calcified four-pound fetus when she finally went to the doctor for acute pain.
A Rare Medical History
Lithopedion cases are exceedingly rare events in modern medicine. The Irish Independent reported that only about one out of every 11,000 pregnancies results in this specific condition. Medical literature has recorded the phenomenon approximately 300 times. An article in the Journal of the Royal Society of Medicine detailed that the first known case occurred in the year 1582. It involved a 68-year-old woman from Sens, France, who carried a calcified fetus for an estimated 28 years.
Due to the size of the internal mass, doctors in Bogota determined they could not leave the object inside the 82-year-old patient. The woman was transferred to a different hospital for a surgical procedure to officially extract the 40-year-old calcified fetus and resolve her abdominal pain.