Teacher:Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).
Teacher: Now, understand the problem? Solve this instance: Abstract: A case is reported in which an epithelioid sarcoma developed in an apparently benign enchondroma or bone infarct at the site of a chrome-cobalt total knee replacement. 
 Which is the apt title for the abstract? option1: Epithelioid sarcoma in association with total knee replacement. A case report. option2: Angiosarcoma of the head and neck: review of 11 cases.
Student:
Epithelioid sarcoma in association with total knee replacement. A case report.