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[Changes in implanted polyvinylformal sponge 35 years after intrapleural sponge plombage]
T Nakamura1, Y Shimizu, S Watanabe
1Department of Physiological Artificial Organs, Kyoto University, Japan.
[Zasshi] [Journal]. Nihon Kyobu Geka Gakkai
|July 1, 1991
Summary
This study reports the successful removal of a 35-year-old intrapleural sponge plombage, revealing significant ribcage changes and material degradation. The polyvinylformal sponge caused hematoma and lost elasticity after decades of implantation.
Area of Science:
- Thoracic surgery
- Biomaterials science
- Medical device analysis
Background:
- Intrapleural sponge plombage was a historical treatment for tuberculosis.
- Long-term implants can lead to unforeseen complications.
- This case involves a 35-year-old intrapleural sponge plombage.
Observation:
- A 52-year-old woman presented with skin induration over a 35-year-old surgical scar.
- Surgical removal revealed rib fusion, a window-like defect in the ribcage, and hematoma from intercostal artery damage.
- The polyvinylformal sponge showed connective tissue infiltration and loss of elasticity.
Findings:
- Successful resection of a long-term intrapleural sponge plombage.
- Analysis of the aged sponge revealed significant mechanical degradation and tissue interaction.
- The implant caused structural bone changes and vascular complications.
Implications:
- Highlights the long-term consequences of inert biomaterial implants.
- Informs future material selection and surgical considerations for thoracic procedures.
- Underscores the importance of monitoring older implants for potential complications.