Summary
Florid reactive periostitis (FRP) is a rare benign bone lesion that affects the fingers or toes of adolescents and young adults (range 5 - 70 years) Women are more commonly affected than men.
The lesion has been given a number of names, including benign fibro-osseous pseudotumor, fasciitis ossificans, parosteal fasciitis, pseudomalignant osseous tumor of soft tissue, and others. Florid reactive periostitis is the term recommended by Landsman. The fingers are equally affected. One case has been reported in the tibia.
(2) Clinically , there is a history of gradually progressive swelling, erythema, and pain or a painful mass in the affected part. Approximately 50% of patients have a history of trauma. The symptoms often develop over one to two months, but there may be a longer history of mild or minimal symptoms or a long history of a nodule in the area. The symptoms are exacerbated by use or weightbearing on the affected bone, and improved by rest, antiinflammatories and corticosteroids. The mass may decrease in size if steroids are given. There are no constitutional symptoms.
Complete Information on this Tumor
Florid reactive periostitis (FRP) is a rare benign bone lesion that affects the fingers or toes of adolescents and young adults (range 5 - 70 years) Women are more commonly affected than men.
The lesion has been given a number of names, including benign fibro-osseous pseudotumor, fasciitis ossificans, parosteal fasciitis, pseudomalignant osseous tumor of soft tissue, and others. Florid reactive periostitis is the term recommended by Landsman. The fingers are equally affected. One case has been reported in the tibia.
Examination reveals a tender mass with mild surrounding warmth and erythema, but no fever or adenopathy. Laboratory studies typically show a normal white blood-cell count and differential and a mildly elevated sedementation rate. Electrolytes and other laboratory values are unaffected. Plain radiographs show the tumor is adjacent to the bone rather than arising from it. Soft tissue swelling is seen as well as a marked periosteal reaction. There may be new bone formation in the soft tissues and subtle cortical thinning. In rare cases there is local erosion of the cortex. Technetium-99 bone scans show a solitary focus of intense uptake. Magnetic resonance scans show a mass and striking signal abnormalities in the soft tissues as well as the nearby bone marrow that are relatively nonspecific and are consistent with infection, trauma, or tumor.