Article

Myositis ossificans mimicking parosteal osteosarcoma: a case report and literature review.

Department of Orthopaedic Surgery, Hospital Clinic of Barcelona, University of Barcelona, Spain.
Acta orthopaedica Belgica (Impact Factor: 0.57). 04/2011; 77(2):274-9.
Source: PubMed

ABSTRACT Myossitis ossificans (MO) is an aberrant reparative process that causes benign heterotopic ossification in soft tissue. We report a case of MO presenting as a large mass located at the dorsal aspect of the distal thigh, with no history of trauma, with radiological and clinical features mimicking parosteal sarcoma. An incisional biopsy was performed and the mass was excised. The histological features identified the lesion as MO. In half of the cases, these ossifications may adhere to the periosteum. In these cases, the lesion is known as parosteal MO, which may be confused with a parosteal osteosarcoma. This parosteal MO seldom becomes malignant. We emphasize the importance of a differential diagnosis of MO, since these lesions may simulate tumours and lead to misdiagnosis.

0 Bookmarks
 · 
57 Views
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Background: The thigh is a common seat for tumours. Many histopathological types can arise there. Management challenges begin from the clinical diagnosis, to the surgery and ultimately the oncological therapy be it medical or radiation based.
  • [Show abstract] [Hide abstract]
    ABSTRACT: During an archaeological excavation in Altenberg/Linz (Upper Austria), the well-preserved skeletal remains of a mature male dated the 13th century AD were recovered. Several elements of the skeleton yielded alterations caused by trauma: beside a malunion of the left ulna which was accompanied by shortening of the diaphysis, a luxation and deformation of the left radial head was observed (Monteggia-type lesion, Bado-type I). Moreover, at the anterior aspect of the corresponding humerus, a chalice-shaped, newly built bone structure that framed the displaced capitulum radii was visible. This structure formed a sort of "alternative joint" that functionally even allowed some movements, although considerably restricted in regard to flexion/extension and even more in pronation/supination.To verify the assumption of a "single event", we not only investigated the concerned skeletal portions by gross-anatomical examination, but also by non-invasive conventional radiological, micro-computed tomographical, and histological techniques. Particular morphological features, injuries at the calvarium, and fractures of other postcranial elements imply the scenario of a close combat; although survived, the traumata obviously resulted in partial invalidity.
    Wiener Medizinische Wochenschrift 09/2012; 162(17-18):386-393.

Full-text (2 Sources)

Download
4 Downloads
Available from
Nov 10, 2014