A 10 year old boy was found to have a symmetric radiolytic lesion on the X-ray at the upper end of the right humerus after being admitted for fracture of humerus. Such a lesion is present on the left humerus as well. What is the likely pathology?
The age of the child, symmetric radiolytic lesion on the upper end of the humerus on both sides with the history of fracture are suggestive of a case of unicameral bone cyst. Ref: Textbook of Disorders and Injuries of the Musculoskeletal System By Robe Bruce Salter, Pages 398-399 ; Essentials in Bone and Soft-Tissue Pathology By Edward F. McCahy, Jasvir S. Khurana, Paul J. Zhang, 2010, Page 70 ; Musculoskeletal Imaging: A Concise Multimodality Approach By Klaus Bohndorf, Herwig Imhof, Thomas Lee Pope, 2001, Page 162
Unicameral bone cyst
Osteosarcoma
Osteoclastoma
Aneurysmal bone cyst