Peripheral primitive neuroectodermal tumor of the chest wall

الملخص EN

A thirty-one-year-old Bangladeshi male presented to the surgical outpatient clinic with a painless lump.

Histopathology revealed peripheral primitive neuroectodermal tumor (PNET) arising from the chest wall.

The tumor was characterized by two populations of cells, predominantly small round cells and invading nearby tissue.

The histological examination was complemented by immunohistochemistry; the tumor cells were positive for CD99, BCL2, NSE, EMA and Vimentin.