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Ossification of the peritoneal membrane
Nicola Di Paolo1, Giovanni Sacchi, Paola Lorenzoni
1Department of Nephrology and Dialysis, University Hospital, Siena, Italy. N.DiPaolo@ao-siena.toscana.it
Summary
Sclerosing peritonitis (SP) in peritoneal dialysis (PD) patients can lead to peritoneal ossification (PO). This study found calcifications and ossification in SP patients, suggesting a link between inflammation and calcium availability, potentially from dialysis solutions.
Area of Science:
- Nephrology
- Pathology
- Medical Research
Background:
- Sclerosing peritonitis (SP) is a rare but severe complication in peritoneal dialysis (PD) patients.
- The pathogenesis of SP and its association with peritoneal ossification (PO) remain largely unknown.
Observation:
- Histopathological examination of 36 SP patients revealed peritoneal calcification in 33% and concurrent calcification and ossification in 11%.
- Ossification of the peritoneum (PO) was observed in 4 out of 16 patients with calcifications.
- Inflammatory infiltrates, including lymphocytes and macrophages, were present in specimens with calcifications and ossification.
Findings:
- Peritoneal ossification (PO) was identified in SP patients, with evidence of bone marrow and arterial ossification in some cases.
- The chemical analysis of ossified material showed a high concentration of calcium chloride and hydroxyapatite.
- An unusual calcium composition in one PO case suggested a potential link to dialysis solutions.
Implications:
- The findings suggest a significant role for inflammation in the development of peritoneal calcification and ossification in SP.
- Further research is needed to elucidate the exact source of calcium and its contribution to PO in PD patients.
- Understanding these associations may lead to improved management strategies for SP and its complications.