Review of para-articular soft tissue osteochondromas of the knee.
Summary of "Review of para-articular soft tissue osteochondromas of the knee."
Para-articular osteochondromas (PAOCs) are a rare benign subtype of chondroma that occur in the soft tissues around the joints. Initially hypothesized to be derived from cartilaginous metaplasia, its aetiology and pathogenesis are still not fully understood. This tumour often causes a diagnostic and management dilemma due to similar clinical and histopathological features compared with other pathology. We report the fourth case of PAOC arising from the suprapatella region of the knee joint and review the literature to update our understanding of this tumour. From the data analysed, a distinctive pattern of tumour formation within or adjacent to a fat pad structure was evident, while trauma appears to play a role in its pathogenesis. Histologically, the tumour consists of a cartilage cap, with varying degrees of trabecular bone and endochondral ossification. Importantly, there are no features of nuclear pleomorphism or increased mitotic activity suggestive of a malignant process. All tumours were surgically removed and behaved in a benign fashion without evidence of recurrence. PAOC may often be suspected for more malignant processes; thus, recognition of this entity is important as simple excision is curative.
Department of Surgery, St. Vincent's Hospital Melbourne, Melbourne, Victoria, Australia.
This article was published in the following journal.
Name: ANZ journal of surgery
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22989085
- DOI: http://dx.doi.org/10.1111/j.1445-2197.2012.06206.x
Medical and Biotech [MESH] Definitions
Soft Tissue Injuries
Injuries of tissue other than bone. The concept is usually general and does not customarily refer to internal organs or viscera. It is meaningful with reference to regions or organs where soft tissue (muscle, fat, skin) should be differentiated from bones or bone tissue, as "soft tissue injuries of the hand".
Noninflammatory degenerative disease of the knee joint consisting of three large categories: conditions that block normal synchronous movement, conditions that produce abnormal pathways of motion, and conditions that cause stress concentration resulting in changes to articular cartilage. (Crenshaw, Campbell's Operative Orthopaedics, 8th ed, p2019)
Soft Tissue Infections
Infections of non-skeletal tissue, i.e., exclusive of bone, ligaments, cartilage, and fibrous tissue. The concept is usually referred to as skin and soft tissue infections and usually subcutaneous and muscle tissue are involved. The predisposing factors in anaerobic infections are trauma, ischemia, and surgery. The organisms often derive from the fecal or oral flora, particularly in wounds associated with intestinal surgery, decubitus ulcer, and human bites. (From Cecil Textbook of Medicine, 19th ed, p1688)
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Neoplasms, Connective And Soft Tissue
Neoplasms developing from some structure of the connective and subcutaneous tissue. The concept does not refer to neoplasms located in connective or soft tissue.
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