[Gorham-Stout idiopathic osteolysis--a local osteoclastic hyperactivity?]

Area of Science:

• Orthopedics
• Pathology
• Radiology

Background:

• Gorham-Stout disease (GSD), also known as massive idiopathic osteolysis, is a rare condition characterized by progressive bone resorption.
• This case highlights a rare presentation of GSD in a 77-year-old female patient.

Observation:

• The patient experienced rapid resorption of the entire right femoral head and neck within 2.5 months following trauma.
• Histological examination revealed marked stimulation of osteoclasts in the bone marrow and intracortical regions.

Findings:

• The study details the clinical course and findings of this rare case of massive idiopathic osteolysis.
• Histopathology confirmed excessive osteoclast activity as the cause of bone resorption.

Implications:

• Early initiation of antiresorptive therapy, including calcitonin and bisphosphonates, is suggested to potentially halt the progression of osteolytic changes in GSD.
• This case underscores the importance of considering GSD in cases of unexplained massive bone resorption, particularly after trauma.