Woman Dies After Surgery to Remove Rare 'Stone Baby' or "Lithopedion"

Symptoms of lithopedion can vary but often include persistent abdominal pain, discomfort, and unusual sensations resembling fetal movements.
In abdominal ectopic pregnancy the fetus may survive for an extended period before dying and undergoing calcification, resulting in lithopedion formation.
(Representational image: Wikimedia commons)
In abdominal ectopic pregnancy the fetus may survive for an extended period before dying and undergoing calcification, resulting in lithopedion formation. (Representational image: Wikimedia commons)
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In March 2024, Daniela Almeida Vera, an 81-year-old woman from Brazil, passed away after an operation to remove a rare condition known as a lithopedion, or "stone baby." Daniela had been unknowingly carrying the calcified fetus in her abdomen for over half a century, dating back to her last pregnancy in 1968. Despite experiencing severe stomach pains over the years, Daniela avoided seeking medical help out of fear, relying instead on alternative medicine. It wasn't until she underwent a 3D tomography scan that the hidden "stone baby" was discovered, leading to her urgent transfer to Ponta Pora Regional Hospital in Brazil.

Understanding Lithopedion in Context to Daniela’s Incident

Lithopedion Definition

Lithopedion, derived from the Greek words lithos (stone) and paidion (child), refers to a rare medical phenomenon where a fetus dies during an ectopic pregnancy and becomes calcified or petrified. The term encompasses various degrees of calcification involving the fetus, membranes, placenta, or a combination of these structures.

There are three main classifications:

  1. Lithokelyphos (calcified membranes),

  2. Lithokelyphopedion (calcified membranes and fetus), and

  3. True lithopedion (calcified fetus).

This condition is typically discovered incidentally during surgery, routine imaging, or a post-mortem examination. While it's a rare occurrence, lithopedion exemplifies the body's remarkable ability to respond to abnormal pregnancies by encapsulating and calcifying the fetus.

In some cases, Lithopedion remains asymptomatic for many years, which can lead to serious complications if left untreated. 

In Daniela's case, the condition went undetected for decades, mimicking symptoms that were initially mistaken for other ailments, such as cancer.

Ectopic Pregnancy

Ectopic pregnancy refers to a pregnancy where the fertilized egg implants outside the uterus, most commonly in the fallopian tubes. This abnormal implantation can lead to various complications, including rupture of the fallopian tube and internal bleeding. Ectopic pregnancies are typically diagnosed early through symptoms like abdominal pain and vaginal bleeding, and they require prompt medical intervention to prevent serious complications.

While lithopion represents a unique outcome of ectopic pregnancy, it also highlights the diverse ways in which pregnancies can develop abnormally outside the uterus.

Ectopic pregnancy refers to a pregnancy where the fertilized egg implants outside the uterus, most commonly in the fallopian tubes. (Representational image: Unsplash)
Ectopic pregnancy refers to a pregnancy where the fertilized egg implants outside the uterus, most commonly in the fallopian tubes. (Representational image: Unsplash)

Abdominal Ectopic Pregnancy

Abdominal ectopic pregnancy occurs when the fertilized egg implants within the abdominal cavity, outside the uterus, and in the fallopian tubes. This rare form of ectopic pregnancy can lead to serious complications due to the limited space and lack of proper blood supply for fetal development.

In some cases, the fetus may survive for an extended period before dying and undergoing calcification, resulting in lithopedion formation. Abdominal ectopic pregnancies often present with nonspecific symptoms, making diagnosis challenging. Treatment typically involves surgical removal of the ectopic pregnancy to prevent complications such as internal bleeding and infection.

Natural Immune Response

When a fetus dies during an ectopic pregnancy, the body initiates a natural immune response to protect against infection and other complications. The immune system may encapsulate the fetal remains and surrounding tissues, leading to calcification over time. This process, known as lithopedion formation, effectively isolates the calcified fetus from the rest of the body, preventing the spread of infection. While the exact mechanisms behind this immune response are not fully understood, lithopedion serves as a testament to the body's ability to adapt and protect itself in the face of adverse circumstances during pregnancy.

Symptoms

Symptoms of lithopedion can vary but often include persistent abdominal pain, discomfort, and unusual sensations resembling fetal movements.

Daniela has reportedly experienced these symptoms since her first pregnancy, describing sensations similar to a baby moving in her belly. However, due to fear and cultural beliefs, she refrained from seeking conventional medical assistance until her condition deteriorated.

Diagnosis

Diagnosing lymphoma can be challenging due to its rarity and nonspecific symptoms. In many cases, it is discovered incidentally during imaging studies, surgery, or post-mortem examinations.

Imaging modalities such as X-rays, ultrasound, computed tomography (CT), and magnetic resonance imaging (MRI) can aid in confirming the diagnosis by revealing the presence of a calcified fetal mass within the abdomen or pelvis.

Clinical history, physical examination findings, and imaging findings are essential for accurate diagnosis and appropriate management of lithopedion.

In Daniela's case, the condition was only identified after advanced imaging techniques such as 3D tomography revealed the presence of the calcified fetus in her abdomen. Before this discovery, medical professionals had suspected cancer, highlighting the diagnostic difficulties associated with this condition.

It was only after having a 3D tomography that she discovered the hidden baby, which dated to her last pregnancy.
Rosely Almeida, Daughter of Daniela Almeida Vera

Treatment

The management of lithopedion depends on various factors, including the patient's age, symptoms, and overall health status. In asymptomatic cases, especially in elderly patients or those with significant comorbidities, conservative management may be preferred to avoid the risks associated with surgical intervention. However, surgical removal of the calcified fetus is often recommended to prevent potential complications such as bowel obstruction, volvulus, or infection. The decision to proceed with surgery should be made carefully, weighing the potential risks and benefits for each individua patient.

The treatment for lithopedion typically involves surgical removal of the calcified fetus, as was attempted in Daniela's case. However, due to the complexity of the procedure and potential complications, it carries inherent risks, especially for elderly patients like Daniela. Despite undergoing the operation, Daniela tragically passed away the following day while still in intensive care.

She didn't want to go to the doctor because she was worried she had a tumor. She would just take medicine so the pain went away.
Vanderlei Avalo Almeida, Son of Daniela Almeida Vera

Daniela Almeida Vera hailed from an indigenous tribe near Brazil's border with Paraguay and was a mother of seven with 40 grandchildren. Her reluctance to seek medical treatment stemmed from cultural beliefs and a fear of conventional healthcare practices. Her passing left her family in mourning, highlighting the devastating impact of this rare condition on affected individuals and their loved ones.

Reference:

1.      Moshiri M, Salari AA, Mansorian HR, Shariat R. Lithopedion(Stone baby). Ann Saudi Med [Internet]. 1996 Jan [cited 2024 Mar 22];16(1):69–70. Available from: http://www.annsaudimed.net/doi/10.5144/0256-4947.1996.69

2.      Ramos-Andrade D, Ruivo C, Portilha MA, Brito JB, Caseiro-Alves F, Curvo-Semedo L. An unusual cause of intra-abdominal calcification: A lithopedion. European Journal of Radiology Open [Internet]. 2014 Jan 1 [cited 2024 Mar 22];1:60–3. Available from: https://www.sciencedirect.com/science/article/pii/S2352047714000082

3.      Hemley SD, Schwinger A. Lithopedion: case report and survey. Radiology [Internet]. 1952 Feb [cited 2024 Mar 22];58(2):235–8. Available from: http://pubs.rsna.org/doi/10.1148/58.2.235

4.      DANIEL ST. Lithopedion: general discussion and case report. Chinese Medical Journal. 1949;67(08):451-60.

(Input from various resources)

(Rehash/Susmita Bhandary/MSM)

In abdominal ectopic pregnancy the fetus may survive for an extended period before dying and undergoing calcification, resulting in lithopedion formation.
(Representational image: Wikimedia commons)
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