Primary tumors of the patella - A review of 42 cases

Mark J. Kransdorf, Richard P. Moser, Tuyethoa N. Vinh, Jun Aoki, John J. Callaghan

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56 Scopus citations


This study reports 42 cases of histologically proven and radiographically correlated primary patellar tumors. Despite diverse histologic diagnoses, the radiographic appearances of benign as opposed to malignant patellar neoplasms are essentially indistinguishable. Although the literature suggests that giant cell tumor is the most frequent benign tumor of the patella, the most common benign neoplasm in this series is chondroblastoma (16 cases). Only four primary malignant lesions were encountered, three cases of lymphoma and one case of hemangioendothelioma. Since 38 (90%) of the 42 cases were benign, a benign etiology should be strongly favored, notwithstanding the radiographic appearance, whenever a primary patellar tumor is encountered.

Original languageEnglish (US)
Pages (from-to)365-371
Number of pages7
JournalSkeletal Radiology
Issue number5
StatePublished - Aug 1989


  • Bone tumors
  • Patella
  • Patellar tumors
  • Skeletal neoplasms

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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