Osteosarcoma of the femur mimicking Ewing sarcoma/primitive neuroectodermal tumour on biopsy and metastatic carcinoma on resection

Osteosarcoma (OS) is known to have several morphological appearances, small cell osteosarcoma and epithelioid osteosarcoma being two well recognized patterns. The former can be mistaken for a Ewing sarcoma/primitive neuroectodermal tumour (ES/PNET), whereas the latter mimics metastatic carcinoma. He...

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Veröffentlicht in:Skeletal radiology 2012-09, Vol.41 (9), p.1163-1168
Hauptverfasser: Jambhekar, Nirmala Ajit, Agarwal, Manish, Suryawanshi, Pallavi, Desai, Saral, Rekhi, Bharat, Gulia, Ashish, Puri, Ajay
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container_end_page 1168
container_issue 9
container_start_page 1163
container_title Skeletal radiology
container_volume 41
creator Jambhekar, Nirmala Ajit
Agarwal, Manish
Suryawanshi, Pallavi
Desai, Saral
Rekhi, Bharat
Gulia, Ashish
Puri, Ajay
description Osteosarcoma (OS) is known to have several morphological appearances, small cell osteosarcoma and epithelioid osteosarcoma being two well recognized patterns. The former can be mistaken for a Ewing sarcoma/primitive neuroectodermal tumour (ES/PNET), whereas the latter mimics metastatic carcinoma. Herein we present an osteosarcoma in a 17-year-old girl that was diagnosed as an ES/PNET on biopsy; however, the resected specimen revealed a very unusual morphology mimicking a metastatic carcinoma with a sex cord stromal tumour-like pattern.
doi_str_mv 10.1007/s00256-012-1406-5
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subjects Adolescent
Cancer
Carcinoma
Carcinoma, Neuroendocrine - pathology
Carcinoma, Neuroendocrine - secondary
Carcinoma, Neuroendocrine - surgery
Case Report
Diagnosis, Differential
Female
Femoral Neoplasms - diagnosis
Humans
Imaging
Medicine
Medicine & Public Health
Metastasis
Nuclear Medicine
Orthopedics
Osteosarcoma
Osteosarcoma - diagnosis
Pathology
Radiology
Sarcoma, Ewing - pathology
Sarcoma, Ewing - secondary
Sarcoma, Ewing - surgery
Surgery
title Osteosarcoma of the femur mimicking Ewing sarcoma/primitive neuroectodermal tumour on biopsy and metastatic carcinoma on resection
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