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Annales de Dermatologie et de Vénéréologie
Volume 140, n° 3
pages 206-208 (mars 2013)
Doi : 10.1016/j.annder.2012.12.008
Received : 5 September 2012 ;  accepted : 5 December 2012
Ostéosarcome cutané primitif
Primary cutaneous osteosarcoma
 

A. Ben M’na a, , I. Chelly a, A. Souissi b, H. Azzouz a, S. Haouet a, M. Mokni b, N. Kchir a, A. Ben Osman b
a Service d’anatomopathologie, hôpital La Rabta, Jabbari, Bab Saadoun, 1007 Tunis, Tunisie 
b Service de dermatologie, hôpital La Rabta, Jabbari, Bab Saadoun, 1007 Tunis, Tunisie 

Auteur correspondant.
Résumé
Introduction

L’ostéosarcome est une tumeur maligne d’origine mésenchymateuse qui touche essentiellement les métaphyses des os longs. La forme extrasquelettique est rare et plus encore la localisation cutanée, qu’elle soit métastatique ou primitive. Nous rapportons un nouveau cas d’ostéosarcome cutané primitif.

Observation

Une femme de 54ans présentait sur le bras gauche une tumeur nodulaire sous-cutanée de consistance dure, évoluant depuis un an. Le diagnostic d’ostéosarcome cutané était retenu grâce à l’examen histologique de la lésion, montrant une prolifération sarcomateuse dermo-hypodermique sécrétant de l’ostéoïde. Le bilan d’extension clinique et radiologique permettait d’éliminer une éventuelle atteinte extracutanée, en particulier osseuse, confirmant ainsi le caractère cutané primitif de l’ostéosarcome.

Discussion

L’ostéosarcome cutané primitif est une tumeur rare dont le diagnostic est en général porté histologiquement.

The full text of this article is available in PDF format.
Summary
Background

Osteosarcoma is a malignant tumor of mesenchymatous origin that chiefly affects the metaphysis of long bones. The extraskeletal form of the disease is rare, and even rarer is a cutaneous site, whether metastatic or primary. Herein, we report a new case of primary cutaneous osteosarcoma.

Patients and methods

A 54-year-old woman presented a hard subcutaneous nodular tumor on her left arm noted 1year earlier. The diagnosis of cutaneous osteosarcoma was made on the basis of histological analysis of the lesion, which showed a sarcomatous dermal-hypodermal proliferation secreting osteoid. Clinical and radiological staging ruled out any extra-cutaneous spread, particularly to bone, thus confirming the primary cutaneous nature of the osteosarcoma.

Discussion

Primary cutaneous osteosarcoma is a rare tumor, diagnosis of which is normally based on histopathological features.

The full text of this article is available in PDF format.

Mots clés : Ostéosarcome extrasquelettique, Ostéosarcome cutané primitif

Keywords : Extraskeletal osteosarcoma, Primary cutaneous osteosarcoma




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