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Inflammatorischer myofibroblastischer Tumor

Inflammatory myofibroblastic tumor

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Zusammenfassung

Inflammatorische myofibroblastische Tumoren (IMT) sind Weichteiltumoren, die in nahezu allen Bereichen des Körpers vorkommen können, wobei ein vermehrtes Auftreten im Abdominalbereich zu beobachten ist. Es sind Spindelzelltumoren mit einem unterschiedlich stark ausgeprägten, überwiegend plasmazellulären Entzündungsinfiltrat. Mittels Immunhistochemie lässt sich eine myofibroblastische Differenzierung zeigen. Eine ALK-Expression liegt in etwa 50% der Fälle vor. Prognostisch verhalten sich die Tumoren überwiegend benigne, jedoch ist bei abdominalen Tumoren eine Rezidivneigung in rund einem Drittel der Fälle zu finden. Maligne Verläufe sind die Ausnahme.

Abstract

Inflammatory myofibroblastic tumor (IMT) is a soft tissue lesion which can be found in almost all parts of the human body, but shows the highest incidence in the abdomen. It is a spindle cell lesion with prominent inflammatory infiltrate which consists predominantly of plasma cells. Using immunohistochemistry a myofibroblastic differentiation can be demonstrated. ALK is expressed in approximately 50% of tumors. The tumors are associated with a benign behavior but recurrences occur in about one third of abdominal cases. Malignant cases are rare.

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Correspondence to I. Leuschner.

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Leuschner, I. Inflammatorischer myofibroblastischer Tumor. Pathologe 31, 106–108 (2010). https://doi.org/10.1007/s00292-009-1262-9

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