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Schwannoma: a spectrum from benign to malignant
Andreea Cătălina Tinca1, Bianca Andreea Lazăr, Andreea Raluca Cozac-Szőke
1Department of Pathology, Mureş County Clinical Hospital, Târgu Mureş, Romania; ohii.andreea-bianca.25@stud.umfst.ro.
Summary
This study analyzes peripheral nerve sheath tumors, detailing benign schwannomas and malignant MPNSTs. Accurate diagnosis relies on integrating histopathology and immunohistochemistry for precise classification and management.
Area of Science:
- Oncology
- Pathology
- Cell Biology
Background:
- Peripheral nerve sheath tumors (PNSTs) originate from Schwann cells.
- These tumors range from benign to malignant, presenting diagnostic challenges.
- Understanding variants and differential diagnoses is crucial for patient outcomes.
Purpose of the Study:
- To evaluate the histopathological and immunohistochemical (IHC) characteristics of PNSTs.
- To analyze tumor variants, particularities, and differential diagnoses.
- To emphasize the importance of integrated diagnostic approaches.
Main Methods:
- Retrospective analysis of 25 PNST cases.
- Histopathological examination, including identification of Antoni A/B patterns and Verocay bodies.
- Immunohistochemical staining using markers such as S100 and SOX10.
Main Results:
- Conventional schwannomas were the most common benign subtype.
- Malignant peripheral nerve sheath tumors (MPNSTs) showed spindle cell/epithelioid morphology and high mitotic activity.
- Distinguishing MPNSTs from other soft tissue tumors was challenging; IHC aids diagnosis.
Conclusions:
- Accurate diagnosis of PNSTs requires integrating histopathology and IHC.
- Recognizing rare variants and subtypes improves understanding and clinical management.
- Precise interpretation of IHC markers like S100 and SOX10 is vital to avoid pitfalls.
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