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Revista Medica Herediana

Print version ISSN 1018-130XOn-line version ISSN 1729-214X


PAUCAR-LESCANO, Patricia K; VENTURA-LEON, Alex  and  DAGNINO-VARAS, Alejando. Primary subcutaneous extraskeletal Ewing’s sarcoma (PNET). A case report and literatura review. Rev Med Hered [online]. 2020, vol.31, n.1, pp.42-46. ISSN 1018-130X.

Ewing´s sarcomas are a less common malignant neoplasms that can be located both in skeletal and extra skeletal areas. The primitive neuroectodermic tumor (PNET) shows more neuronal differentiation than Ewing´s sarcoma and rarely invades the skin and soft tissues. This tumor occasionally presents as a primary skin cancer which has distinctive features such as a superficial tumor with a 2-3 cm, soft, mobile and eventually painful. Most affected areas of the body are paravertebral spaces, lower limbs, head, neck and pelvis. We report here the case of a 13 year old male presenting with 2 superficial tumors located on the scalp, the histo pathological examination revealed a proliferation of small, basophilic and monomorphic cells that showed FLI1 positive immunohistochemistry pattern compatible with PNET.

Keywords : Sarcoma; Ewing; skin; neuroectodermal tumors; primitive; peripheral.

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