Prognostic analysis and clinical characteristics of osteosarcoma and Ewing sarcoma of the rib, sternum, and clavicle: a SEER-based study.

Objective: Osteosarcoma and Ewing sarcoma of the rib, sternum, and clavicle are rare tumor entities, and their clinical features and treatment outcomes have been rarely reported. The present study was performed to evaluate their survival and confirm independent survival predictors.

Methods: Data on patients with osteosarcoma or Ewing sarcoma of the rib, sternum, and clavicle from 1973 to 2016 were retrospectively extracted from the database.

Clinical characteristics and survival analysis of patients with limb epithelioid sarcoma.

Limb epithelioid sarcoma (LES) is a rare and aggressive soft tissue sarcoma, which is scarcely reported. Therefore, the current study was performed to analyze the clinicopathologic features and risk factors of survival among patients with LES. By using the Surveillance, Epidemiology, and End Results database, data were obtained regarding patients who were diagnosed with LES for the period between 2010 and 2016.