From Applied Radiology General Approach to Lytic Bone Lesions Posted 05/21/2004 D. Lee Bennett, MD, MA; Georges Y. El-Khoury, MD Abstract and Introduction Abstract When interpreting musculoskeletal radiographs, a radiologist must be able to identify a lytic lesion and provide a definitive diagnosis or a reasonable differential diagnosis for the lesion. This article addresses these issues and details a rational and systematic approach to such lesions. Medscape

eMedicine Radiology Topic Introduction Differentials Radiograph CT Scan MRI Nuclear Medicine Intervention Pictures Bibliography Background: The simple bone cyst is a common, benign, fluid-containing lesion, usually occurring in the metaphysis of long bones. The cause of the lesion is unknown. Bloodgood recognized it as a different entity from other cystic bone lesions in 1910. Jaffe and Lichtenstein provided a detailed discussion of simple bone cysts in 1942. Author: Eu-Leong Harvey Teo, MBBS, FRCR, Consulting Staff, Department of Diagnostic Imaging, Kandang Kerbau Women's and Children's Hospital Coauthor(s): Wilfred CG Peh, MBBS, MHSM, MD, FRCPE, FRCPG, FRCR, Clinical Professor, Faculty of Medicine, National University of Singapore; Senior Consultant Radiologist, Programme Office, Singapore Health Services

Wheeless' Textbook

Over 20 cases discussed with radiographs, differential diagnois etc. Uniformed Services University, Radiology Teaching files

Search String - "Bone Cysts"[majr:noexp] AND (unicameral[All Fields] OR simple[All Fields] OR unilocular[All Fields]) URL http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=PureSearch&db=pubmed&details_term=%22Bone%20Cysts%22%5Bmajr%3Anoexp%5D%20AND%20%28unicameral%5BAll%20Fields%5D%20OR%20simple%5BAll%20Fields%5D%20OR%20unilocular%5BAll%20Fields%5D%29

Abstract Background-3% of biopsied primary bone lesion are bone cyst. It involves mostly proximal end of femur and humerus. Most popular method of treatment is curettage and bone graft or injection of hydrocortisone in the cyst. Methods-Between 1993-1997, 30 patients with UBC of proximal end of humerus were treated in two groups. 1) Curettage and bone graft; 2) Injection of hydrocortisone. Results-The healing rate in surgical patient was 85.7% and injected cases was 75%. Average healing time in surgical cases was 11.6 months and in injected cases was 13.9 months. Conclusion-Considering that the result of two groups are more or less the same, it is better to treat UBC of proximal end of humerus by injection of hydrocortisone in the cyst. Full Text Article in Annals of Iranian Medicine

Unicameral Bone Cysts of the Pelvis: a report of 16 cases Iowa Orthopaedic Journal Hamoud, Weber & McCarthy

POSNA Core Curriculum Objectives 1. Describe the three stages of benign bone tumors of the Musculoskeletal Tumor Society 2. Discuss the pathology of unicameral bone cyst, and stage this lesion in the Musculoskeletal Tumor Society classification 3. Describe the anatomic location of unicameral bone cyst, both by bones affected and location within the bone 4. Describe the radiographic features of unicameral bone cyst 5. Discuss the natural history of unicameral bone cysts 6. Describe the difference between active and inactive cysts 7. Discuss treatment approaches to active and inactive cysts

simple bone cyst

Radiology case 415-3181

Radiology case 443-3181

Radiology case 462-3181

Radiology case 4642-3181