Harman Patil (Editor)

Inflammatory myofibroblastic tumour

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Covid-19
ICD-O  M8825/1
Inflammatory myofibroblastic tumour

Inflammatory myofibroblastic tumour is a lesional pattern of inflammatory pseudotumour, as plasma cell granuloma. It is abbreviated IMT.

Contents

Symptoms

The symptoms depend on the specific location of the tumour, which can be anywhere in the body.

Diagnosis

Inflammatory myofibroblastic tumours are diagnosed based on their appearance under the microscope, by pathologists. Medical imaging findings are non-specific.

Pathology

Inflammatory myofibroblastic tumours are characterized by a mix of inflammatory cells, e.g. plasma cells, lymphocytes and eosinophils, and bland spindle cells without nuclear atypia. These tumours may have necrosis, hemorrhage, focal calcification and mitotic activity.

The histologic differential diagnosis includes:

  • calcifying fibrous pseudotumour
  • inflammatory fibroid tumour
  • nodular fasciitis.
  • Approximately half of IMTs have a rearrangement of the ALK gene.

    Localization

  • Lung or Bronchus
  • Liver
  • Urinary bladder
  • References

    Inflammatory myofibroblastic tumour Wikipedia


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