User menu

Accès à distance ? S'identifier sur le proxy UCLouvain

Self-resolving focal non-ossifying myositis: a poorly known clinical and imaging entity diagnosed with MRI.

Primary tabs

download
  • Open access
  • PDF
  • 763.74 K
Perlepe, Vasiliki [UCL] Dallaudière, Benjamin Omoumi, Patrick Hristova, Lora [UCL] Rezzazadeh , Afshin [UCL] Vande Berg, Bruno [UCL] Malghem, Jacques [UCL] Lecouvet, Frédéric [UCL]

BACKGROUND: Focal myositis is a rare benign inflammatory pseudotumor, presenting as a painful nodular mass within a muscle, and characterized by spontaneous resolution within weeks. PURPOSE: To assess the clinical and imaging findings of focal nodular myositis simulating a neoplasm at clinical examination, with no history of trauma. MATERIAL AND METHODS: This study describes the locations and appearance at ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI) of this condition in a series of five patients. RESULTS: MRI and US displayed a solid intramuscular "tumor" and suggested a continuum between the proximal and distal muscle fibers that appeared thickened within the nodular lesion, a sign that has been reported in myositis ossificans. MRI showed edema in adjacent muscles and soft tissues, as well as intense enhancement of the mass. Intense vascular flows were seen at Doppler analysis. CT did not reveal the appearance of peripheral ossifications, ruling out the diagnosis of myositis ossificans. In some patients, the diagnosis of sarcoma had been suggested as possible by the radiologist. Imaging follow-up with MRI showed complete resolution of the masses over several weeks, thus avoiding a biopsy; no recurrence was observed at long-term follow-up (more than 24 months). CONCLUSION: This paper highlights MRI and US findings in focal non-ossifying myositis, and emphasizes the role of MRI in suggesting this diagnosis, leading to the careful follow-up of the lesion until its resolution, and ruling out more aggressive lesions.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 2015
Language Anglais
Journal information "Acta Radiologica Open" - Vol. 4, no.12, p. 205846011560615 [1-7] (2015)
Peer reviewed yes
Publisher SAGE Publishing ((United Kingdom) London)
e-issn 2058-4601
Publication status Publié
Affiliations UCL - SSS/IREC/IMAG - Pôle d'imagerie médicale
UCL - (SLuc) Service de radiologie
Links
  1. Heffner Reid R., Armbrustmacher Vernon W., Earle Kenneth M., Focal myositis, 10.1002/1097-0142(197707)40:1<301::aid-cncr2820400142>3.0.co;2-n
  2. Moskovic E., Fisher C., Westbury G., Parsons C., Focal myositis, a benign inflammatory pseudotumour: CT appearances, 10.1259/0007-1285-64-762-489
  3. Liefeld P A, Ferguson A B, Fu F H, Focal myositis : a benign lesion that mimics malignant disease. A case report., 10.2106/00004623-198264090-00015
  4. Hoffmann A, Ultraschall Med, 27, 180 (2006)
  5. Shapiro Marc J., Applebaum Harry, Besser Arthur S., Cervical focal myositis in a child, 10.1016/s0022-3468(86)80209-3
  6. Azuma Tomio, Komori Akira, Nagayama Masaru, Focal myositis of the tongue, 10.1016/0278-2391(87)90447-2
  7. Kransdorf MJ, Radiol Clin North Am, 31, 359 (1993)
  8. Kransdorf M. J., Temple H. Thomas, Sweet Donald E., Focal myositis, 10.1007/s002560050382
  9. TOTI P., CATELLA A.M., BENVENUTI A., Focal myositis?a pseudotumoral lesion, 10.1111/j.1365-2559.1994.tb01298.x
  10. Ellis Gary L., Brannon Robert B., Focal myositis of the perioral musculature, 10.1016/0030-4220(79)90033-1
  11. Hansen LB, Acta Chir Scand, 151, 77 (1985)
  12. Maguire James K., Milford Lee W., Pitcock James A., Focal myositis in the hand, 10.1016/0363-5023(88)90218-3
  13. Lim K. L., Robson K., Powell R. J., Focal myositis: an unusual cause of bilateral upper eyelid swellings., 10.1136/pgmj.69.817.876
  14. NAUGHTON M., JESSOP J. D., WILLIAMS B. D., IDIOPATHIC RECURRENT NON-SUPPURATIVE FOCAL MYOSITIS: A REPORT OF TWO CASES, 10.1093/rheumatology/32.12.1101
  15. Caldwell C.J., Swash M., van der Walt J.D., Geddes J.F., Focal myositis: a clinicopathological study, 10.1016/0960-8966(94)00061-d
  16. May David A., Disler David G., Jones Elizabeth A., Balkissoon Avinash A., Manaster B. J., Abnormal Signal Intensity in Skeletal Muscle at MR Imaging: Patterns, Pearls, and Pitfalls, 10.1148/radiographics.20.suppl_1.g00oc18s295
  17. Dinauer Philip A., Brixey Clark J., Moncur Joel T., Fanburg-Smith Julie C., Murphey Mark D., Pathologic and MR Imaging Features of Benign Fibrous Soft-Tissue Tumors in Adults, 10.1148/rg.271065065
  18. Lecouvet F, JBR-BTR, 84, 268 (2001)
  19. Smith A. Gordon, Urbanits Sabine, Blaivas Mila, Grisold Wolfgang, Russell James W., Clinical and pathologic features of focal myositis, 10.1002/1097-4598(200010)23:10<1569::aid-mus14>3.0.co;2-m
  20. Stacy Gregory Scott, Dixon Larry B., Pitfalls in MR Image Interpretation Prompting Referrals to an Orthopedic Oncology Clinic, 10.1148/rg.273065031
  21. Murphey Mark D., Gibson Michael S., Jennings Bryan T., Crespo-Rodríguez Ana M., Fanburg-Smith Julie, Gajewski Donald A., Imaging of Synovial Sarcoma with Radiologic-Pathologic Correlation, 10.1148/rg.265065084
Bibliographic reference Perlepe, Vasiliki ; Dallaudière, Benjamin ; Omoumi, Patrick ; Hristova, Lora ; Rezzazadeh , Afshin ; et. al. Self-resolving focal non-ossifying myositis: a poorly known clinical and imaging entity diagnosed with MRI.. In: Acta Radiologica Open, Vol. 4, no.12, p. 205846011560615 [1-7] (2015)
Permanent URL http://hdl.handle.net/2078.1/186448