Spindle Cell Tumours of oral cavity
Authors:
Dr. Rutuja G. Vidhale,
Dr. Treville Pereira,
Format: Paperback | Genre : Dental Science | Other Book Detail
Format: Paperback | Genre : Dental Science | Other Book Detail
Spindle cells are of mesenchymal origin and constitute a part of the body’s
connective tissue. On cytologic examination these cells appear elongated with
a fusiform or ovoid nucleus. The tissue of origin can be determined based
on evidence of collagen, cartilage, bone, fat or myxomatous material formed
by the tumor cells. Epithelial-Mesenchymal Transition (EMT) and lack of
expression of cell adhesion molecules like cadherins is a primary process
describing the pathogenetic mechanisms.[4,5] EMT has been postulated as a
versatile mechanism that facilitates cellular reconstitution during embryonic
development and when incited later in life, contributes to various pathologic
processes.[6] Soft tissue spindle cell neoplasms may range from reactive
lesions to benign and malignant tumors.[7] This heterogenous group of lesions
includes those of neural, fibroblastic, myofibroblastic, myogenic, epithelial
and vascular tumors. They are quite rare in the oral cavity and account for less
than 1% of all the tumors of oral origin and 3% of the salivary gland tumors.
The vast appearances and architectural patterns of the spindle cell tumors
make the distinction from similar microscopic lesions quite enigmatic.[3,8]
As the spindle cells contain both benign and malignant mimics,
misclassification has the potential to result in either under or over treatment
of the patient.[9] The tissue of origin can determine the biologic potential of
the lesions.[3,10
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