title: Cutaneous metastasis of osteosarcoma in the scalp.
abstract: As a primary malignant bone tumor, osteosarcoma is second only to chondrosarcoma. Although it commonly metastasizes and is aggressive in nature, it rarely colonizes the skin. This is a report of a 22-year-old male with osteosarcoma of the pelvis and metastasis to the lungs and chest wall who developed a clinically unsuspected solitary cutaneous metastasis in the scalp. Instead of the expected cyst, incisional biopsy disclosed a solid tan nodule of chondro-osseous sarcoma. Although rare, cutaneous metastases from osteosarcoma may appear in skin, especially the scalp, or in skin over the primary tumor. New skin lesions in a patient with a history of osteosarcoma warrant investigations including imaging and biopsy.
authors.affiliation: New York Medical College, Valhalla, USA.
authors.forename: Mary I
authors.initials: MI
authors.lastname: Ragsdale
authors.forename: Larisa M
authors.initials: LM
authors.lastname: Lehmer
authors.forename: Bruce D
authors.initials: BD
authors.lastname: Ragsdale
authors.forename: Warren A
authors.initials: WA
authors.lastname: Chow
authors.forename: Robert T
authors.initials: RT
authors.lastname: Carson
mesh_terms: D001859:Bone Neoplasms / Q000473:pathology* / Q000628:therapy; D003131:Combined Modality Therapy; D017809:Fatal Outcome; D006801:Humans; D008175:Lung Neoplasms / Q000556:secondary; D008297:Male; D012516:Osteosarcoma / Q000556:secondary* / Q000628:therapy; D010384:Pelvic Bones / Q000473:pathology; D010386:Pelvic Neoplasms / Q000473:pathology*; D012535:Scalp / Q000473:pathology*; D012878:Skin Neoplasms / Q000556:secondary* / Q000628:therapy; D035441:Thoracic Wall / Q000473:pathology; D055815:Young Adult