Myositis ossificans: radiologic evaluation of two cases with diagnostic computed tomograms

Journal Article · Sun Aug 01 04:00:00 EDT 1982 · Clin. Orthop.; (United States)

DOI:https://doi.org/10.1097/00003086-198208000-00035· OSTI ID:6584125

Zeanah, W R; Hudson, T M

Although most physicians associated myositis ossificans with recent, acute trauma, only 40%-60% of patients give such a history. The appearance of a soft tissue mass without a clear history of trauma may suggest a diagnosis of sarcoma, especially because results of a biopsy of the central portion of an area of myositis ossificans may yield immature, undifferentiated tissue resembling a sarcoma. Pain and rapid growth of a mass are more usual in myositis ossificans than in sarcomas, and careful inquiry may reveal stretching injury or chronic trauma associated with normal, vigorous, physical activities. Recognizing the characteristic histologic zoning phenomenon (immature tissue centrally surrounded by more mature tissue and a peripheral shell of benign bone) during the biopsy procedure permits the correct diagnosis of myositis ossificans. Plain radiographs or conventional tomograms may reflect this histologic zoning by demonstrating the typical, mature, outer shell of bone. Although additional radiographic studies are not usually necessary, they may be obtained when the mass is suspected to be a sarcoma. In two patients computed tomographic scans clearly demonstrated well-defined, peripheral shells of mature bone, diagnostic of myositis ossificans.

• Research Organization: Department of Radiology, University of Florida Medical Center, Gainesville
• OSTI ID: 6584125
• Journal Information: Clin. Orthop.; (United States), Journal Name: Clin. Orthop.; (United States) Vol. 168; ISSN CORPA
• Country of Publication: United States
• Language: English

Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
550901 -- Pathology-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
62 RADIOLOGY AND NUCLEAR MEDICINE
BIOPSY
BODY
COMPUTERIZED TOMOGRAPHY
COUNTING TECHNIQUES
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DIAGNOSTIC USES
DISEASES
NEOPLASMS
ORGANS
PATIENTS
RADIOISOTOPE SCANNING
SARCOMAS
SKELETAL DISEASES
SKELETON
TOMOGRAPHY
USES