Intrathoracic malignant peripheral nerve-sheath tumour associated with lipoma

Area of Science:

• Thoracic oncology
• Neurosurgery
• Pathology

Background:

• Malignant peripheral nerve-sheath tumors (MPNSTs) are rare, aggressive neoplasms arising from peripheral nerves.
• Intrathoracic MPNSTs are exceptionally uncommon, presenting diagnostic and therapeutic challenges.
• The association of MPNSTs with lipomas, particularly in the mediastinum, is not well-documented.

Observation:

• A 76-year-old female patient presented with an intrathoracic mass.
• Imaging revealed a malignant peripheral nerve-sheath tumor alongside mediastinal lipomas.
• Surgical resection was performed for both the schwannoma and lipomas.

Findings:

• The patient experienced a recurrence of the schwannoma four months post-operatively.
• A second surgical intervention was undertaken.
• The patient unfortunately succumbed to pneumonia following the second operation.

Implications:

• This case highlights the potential for aggressive behavior and recurrence of intrathoracic MPNSTs.
• The co-occurrence of MPNSTs and mediastinal lipomas represents a unique clinical scenario.
• Further research is warranted to understand the pathogenesis and optimal management of such rare associations.