37-year-old female, no clinical history

 

Images

Doctor's Information

Name : Hamid
Family :Mohammadpour
Affiliation : Radiology Department,Loghman Hakim Hospital,SBMU
Academic Degree: Assistant Professor of Radiology
Email : This email address is being protected from spambots. You need JavaScript enabled to view it.
Resident : Hussein Soleiman Tabar

 

Patient's Information

Gender : Female
Age : 37

 

Case Section

Head & Neck Imaging

 

Clinical Summary

37-year-old female, no clinical history

 

 

Imaging Procedures and Findings

CT images demonstrate an expansile lytic lesion with homogeneous content and sclerotic margin in the anterior wall of right maxillary sinus. No bony erosion is visible. Findings are compatible with a fibro-osseous tumor.

 

Discussion

Nonossifying fibroma is a benign tumor arising from fibrous connective tissue, which is composed of whorled bundles of connective tissue cells. This tumor has a propensity to develop at sites of muscular attachment to bones and may be related to fibrous cortical defect and the names are sometimes used interchangeably. However, some differerences do exist; nonossifying fibromas tend to be larger and more often symptomatic. These lesions may develop as a result of unrecognized local trauma that has caused focal hemorrhage and edema. The most common sites of involvement are the long tubular bones, especially the tibia and femur. Usually they involve the posterior wall and medial rather than lateral bone surface. On radiographs focal, shallow radiolucent areas are observed in the cortex with normal or sclerotic bone adjacent to the lesion. Sometimes a blister-like peripheral shell of bone is present. With growth of the bone, an apparent shaftward migration from the metaphysis may occur; segmental sclerosis may be seen in part of the bone defect. Among the complications occurring in persons with nonossifying fibroma are pathologic fracture, osteomalacia and rickets, and Jaffe Campanacci syndrome.

 

Final Diagnosis

Non-ossifying fibroma

 

References

http://www.medcyclopaedia.com/library/topics/volume_iii_1/n/nonossifying_fibroma.aspx?s=nonossifying+fibroma&mode=1&syn=&scope=

 

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