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Persistent interstitial pulmonary emphysema-like cyst associated with metastatic synovial sarcoma
1Department of Pathology, Hospital de Niños Superiora Sor María Ludovica, La Plata, Argentina.
Summary
Persistent interstitial pulmonary emphysema (PIPE) typically affects neonates. This report details a rare case of PIPE-like changes in a 15-year-old with synovial sarcoma metastasis.
Area of Science:
- Pulmonology
- Oncology
- Pathology
Background:
- Interstitial pulmonary emphysema (IPE) involves gas dissection in lung interstitium, often seen in neonates with respiratory distress.
- Persistent interstitial pulmonary emphysema (PIPE) can be localized or diffuse, with localized PIPE rarely occurring spontaneously in infants.
- Histologically, PIPE features histiocytes lining cyst surfaces.
Observation:
- A 15-year-old male with a 4-year history of synovial sarcoma (SS) of the right ankle was evaluated.
- Pulmonary metastasis was identified in the patient.
- One metastatic lesion exhibited cystic changes consistent with PIPE.
Findings:
- The case presents a rare association between synovial sarcoma metastasis and cystic lung changes.
- The observed cystic changes in pulmonary metastasis showed features characteristic of persistent interstitial pulmonary emphysema (PIPE).
Implications:
- This finding suggests that synovial sarcoma metastasis can manifest with PIPE-like features, expanding the differential diagnosis for cystic lung lesions.
- Highlights the importance of considering metastatic disease in patients with atypical pulmonary findings, especially those with a history of sarcoma.
- Further research may elucidate the specific mechanisms driving these cystic changes in metastatic sarcoma.