Inflammatory myofibroblastic tumor
Inflammatory myofibroblastic tumors (IMT), also known as plasma cell granulomas, are rare neoplasms that have a diverse spectrum of biological behavior.
These tumors were previously referred to as inflammatory pseudotumor.
They can occur at any age and there is currently no recognized gender predilection.
Composed of spindle cells (key feature) with a variable infiltrate of inflammatory cells and fibrous tissue. They can occur at numerous sites:
- more common
- lung: inflammatory myofibroblastic tumor of the lung
- abdominal cavity
- less common
- genitourinary tract
Imaging characteristics depend on the organ of involvement:
- inflammatorischer Pseudotumor der Orbita
- inflammatorischer Pseudotumor der Leber
- Inflammatorischer Pseudotumor der Harnblase
- inflammatorischer Pseudotumor der Milz
- entzündlicher Pseudotumor der Lunge
- inflammatory pseudotumour IgG4 related disease
- inflammatorischer fibroider Polyp
- inflammatorischer myofibroblastischer Tumor der Schilddrüse