Extraskeletal osteosarcoma with synchronous regional lymph node and soft tissue metastasis: a rare presentation of an uncommon tumour

Extraskeletal osteosarcoma is a rare soft tissue neoplasm arising from mesenchymal elements with characteristic production of osteoid. These tumours are known to have high rate of distant metastasis and dismal prognosis. We present a rare case of extraskeletal osteosarcoma arising in medial aspect o...

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Bibliographic Details
Published in:European journal of orthopaedic surgery & traumatology 2013-11, Vol.23 (Suppl 2), p.317-321
Main Authors: Gulia, Ashish, Puri, Ajay, Jain, Sumeet, Rekhi, Bharat, Juvekar, Sashikant
Format: Article
Language:English
Subjects:
Adult
Bone cancer
Humans
Inflammatory diseases
Knee Joint
Lymphatic Metastasis
Magnetic Resonance Imaging
Male
Medicine
Medicine & Public Health
Multimodal Imaging
Musculoskeletal diseases
Osteosarcoma - diagnosis
Osteosarcoma - secondary
Osteosarcoma - therapy
Positron-Emission Tomography
Sarcoma
Soft Tissue Neoplasms - diagnosis
Soft Tissue Neoplasms - secondary
Soft Tissue Neoplasms - therapy
Surgical Orthopedics
Thigh
Tomography, X-Ray Computed
Traumatic Surgery
Up-to date Review and Case Report
Young Adult
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Summary:Extraskeletal osteosarcoma is a rare soft tissue neoplasm arising from mesenchymal elements with characteristic production of osteoid. These tumours are known to have high rate of distant metastasis and dismal prognosis. We present a rare case of extraskeletal osteosarcoma arising in medial aspect of knee joint with synchronous inguinal node and soft tissue metastasis. The patient was initially diagnosed as myositis ossificans at an outside institute and excised without prior imaging or biopsy. The patient presented to our hospital with recurrent lesion along with palpable inguinal lymph nodes and soft tissue metastasis in thigh. The patient underwent neoadjuvant chemotherapy and wide excision of the primary lesion, soft tissue metastasis and complete groin node dissection. We also discuss the importance of PET scan and intra-operative ultrasonography in the management of these lesions.
ISSN:1633-8065
1432-1068
DOI:10.1007/s00590-012-1097-6