IMT represents the neoplastic subset of the
family of inflammatory pseudotumors, an umbrella
term for spindle cell proliferations of uncertain
histogenesis with a variable inflammatory component. It
is important to recognise this entity for their
unpredictable recurrent behaviour. We present a series
of 7 cases of IMT involving different organs.Most of the
patients were middle aged female. Oral cavity was the
most frequent site followed by upper limb, lung and
intestine. Recurrence was seen in patients with upper
limb IMTs. IHC Alk was positive in only one case. Out
of 7 cases, 4 cases had repeated negative biopsies. There
is a long list of morphological differentials to exclude
before diagnosing IMT. IHC can help to arrive at the
diagnosis, but not without pitfalls and these cases
highlight the need for clinicopathological and
radiological correlation along with a high index of
suspicion, and of course, the use of ancillary techniques
such as IHC, FISH would adjunct to arrive at the
accurate diagnosis.Alk negative IMT remains a
masquerading entity about their diagnosis, pathology (
? infective? neoplastic) and biological behaviour
requiring more detailed genetic analysis and
immunohistochemical studies for further classification.
Keywords : Myofibroblast, Inflammatory, Alk, Negative, Any, WHO,Intermediate