Lipoma arborescens also referred to as villous lipomatous proliferation of synovial membrane diffuse lipoma of the joint or diffuse synovial lipoma is a rare benign intra-articular lesion characterized by villous proliferation of the synovial membrane. It is a rare condition typically present between 50-70 years but has been reported in the young as in this case.
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It is most often observed in those over 50 years or age.
. Lipoma arborescens LA diffuse articular lipomatosis synovial lipomatosis Hoffa disease is a rare intra-articular lesion of unknown etiology. Lipoma arborescens Arthritis Rheum. Biochemical and Genetic Pathology.
Hence the Latin. The exact aetiology remains unknown the main hypothesis being a response to chronic inflammatory or traumatic stimuli. LA affects mainly large joints such as hips and knees.
The MR imaging findings of 32 patients with the diagnosis of lipoma arborescens of the knee n32 and shoulder n1 were reviewed. Lipoma arborescens diffuse articular lipomatosis is a rare articular lesion consisting of subsynovial villous proliferation of mature fat cells 1 usually involving the suprapatellar pouch of the knee joint. 1 however other joints can.
The macrospic frondlike appearance was felt to resemble a tree in leaf. Details of the clinical and histomorphological examination and treatment in addition to a review of the. LA is characterized by villous transformation of the synovium due to diffuse infiltration of the subsynovial stroma by mature adipose cells.
Associated conditions have included osteoarthritis joint trauma diabetes mellitus. Authors A Van Landeghem 1 B Arys C Heyse N Peters W Huysse. Evidence of an ill-defined irregular shaped frond-like synovial based intra-articular lesion located within the suprapatellar bursa.
The diagnosis of lipoma arborescens was confirmed by the. In 20 of the cases popliteal cysts were. The signs and symptoms of Lipoma Arborescens include.
It shows high signal intensity on T1 and T2 WIs associated with mild joint effusion the findings in favor of. The Latin word arbor means tree-like morphology. In a subgroup of lipomas the HMGA2 gene located on 12q143 was involved in tumor pathogenesis.
This article presents three patients who had LA which was diagnosed in the knee in two patients and in the wrist of the third patient. Lipoma arborescens is characterized by villous lipomatous proliferation of the synovial membrane. INTRODUCTION Lipoma arborescens is a rare condition affecting synovial linings of the joints and bursae with frond like depositions of fatty tissue.
They account for less than 1 of all lipomatous lesions Originally described by Hoffa the macrospic frond like appearance was felt to resemble a tree in leaf. Lipoma arborescens is a condition affecting synovial linings of the joints and bursae with frondlike depositions of fatty tissue. Author P Diana Afonso 1 Affiliation 1 Hospital Garcia Orta Lisbon Portugal.
The condition can cause an accumulation of joint fluid called a reactive joint effusion due to repeated injury of the synovial layer that surrounds a joint. Lipoma pathology Magnetic Resonance Imaging Male. Epub 2012 Mar 5.
It is a rare condition typically present between 50-70 years but has been reported in the young as in this case. The Latin term arborescens means tree-like appearance describing the. The etiology of this condition still remains unclear.
Lipoma arborescens is a chronic slowly progressive intra-articular lesion characterised by villous lipomatous proliferation of the synovium usually involving the suprapatellar pouch of the knee joint. Intra-articular lipoma arborescens LA is an uncommon benign synovial neoplasm of unknown etiology. The following structural rearrangements of chromosomes have been associated with lipoma occurrence.
Pain in the affected joints. Lipoma arborescens is a rare benign intra-articular lesion of unknown etiology in which there is diffuse replacement of the subsynovial tissue by mature fat cells with prominent villous transformation of the synovium. Lipomatosis pathology Magnetic Resonance Imaging Male.
Affiliation 1 Department. The involvement of both ankles in an otherwise well young man was highly suggestive of an inflammatory seronegative pathology. However the normal inflammatory markers failure to respond to DMARDs and the little benefit from steroid injection.
Lipoma arborescens also known as diffuse articular lipomatosis is a rare benign articular lesion comprising mature adipose cell proliferation in the subsynovial region with a predilection to the suprapatellar bursa. Swelling of the joint. To describe the typical features of lipoma arborescens on MR imaging with pathologic correlation and to evaluate the associated lesions within the joints.
These findings are characteristic of lipoma arborescens. Lipoma arborescens LA is a rare pathology consisting in adipose metaplasia of the subsynovial tissue arising from chronic joint inflammation. A genetic link has been demonstrated that cites that about two-thirds of lipomas exhibit genetic abnormalities.
It has mainly been reported to occur in the suprapatellar bursa but may also involve other joints such as the shoulder ankle or. It is an uncommon cause of intra-articular masses that presents as slowly progressive painless swelling of the joint which persists for many years and is accompanied by. Albert Hoffa a German surgeon made the first description of lipoma arborescens in 1904.
Hence the Latin term arborescens meaning tree-forming or treelike. Restricted or decreased range of motion in the affected joints.
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