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Inflammatory myofibroblastic tumours: where are we now?
1Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
Journal of Clinical Pathology
|October 17, 2007
Summary
Inflammatory myofibroblastic tumour (IMT) is a distinct entity within inflammatory pseudotumours, primarily affecting young patients. This review covers IMT's clinical, pathological, and molecular aspects, aiding diagnosis.
Area of Science:
- Oncology
- Pathology
- Genetics
Background:
- Inflammatory pseudotumour is a broad term for neoplastic and non-neoplastic conditions.
- Inflammatory myofibroblastic tumour (IMT) has emerged as a distinct entity with unique features.
Purpose of the Study:
- To review the clinical, pathological, and molecular genetic characteristics of IMT.
- To discuss diagnostic and differential diagnostic approaches for IMT.
Main Methods:
- Histological pattern analysis.
- Review of clinical data.
- Molecular genetic analysis, including ALK tyrosine kinase gene translocations.
Main Results:
- IMT predominantly affects children and adolescents, with a predilection for visceral soft tissues.
- Histological patterns include fasciitis-like, compact spindle cell, and hypocellular fibrous types.
- Approximately 50% of IMTs, especially in young patients, show ALK gene translocations.
Conclusions:
- IMT is a distinct tumor with specific clinical and pathological features.
- Understanding these features is crucial for accurate diagnosis and management.
- Molecular genetic findings, particularly ALK alterations, are important diagnostic markers.
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