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Osteosarcoma typically presents with primary site pain. The authors report a case of extensive metastatic osteosarcoma without any complaint of primary site pain during initial presentation. The 23-year-old female patient presented with simultaneous multiple cervical, supraclavicular, and axillary lymphadenopathy, as well as two large subcutaneous fat tumours. Despite initial excision biopsy of cervical lymph nodes, the diagnosis of osteosarcoma was only clinched after open biopsy of the right distal femur lesions and further histological evaluation. Though the patient was promptly started on neo-adjuvant chemotherapy and achieved excellent histological response to treatment, the disease had relapsed quickly and she succumbed to the disease one year after initial presentation. This report highlights the need to be vigilant in the workup and investigation of osteosarcoma, as the presenting symptoms may be more heterogenous than the conventional teaching of primary site pain.