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Lipomatous tumours

Pathology of Synovial Lipoma: (Lipoma Arborescens)

Dr Sampurna Roy MD                

 

                                                                                                                      

 

 

Synovial lipoma: (Lipoma Arborescens) is a rare benign intrarticular lesion characterised by the replacement of the subsynovial tissue by mature fat cells giving rise to a villous proliferation.

This is often a secondary reactive process associated with degenerative joint disease, chronic rheumatoid arthritis, or prior trauma.

The lesion usually occur in adults.

A few cases of circumscribed synovial lipoma have been reported in children and adolescents.

Males are affected much more commonly than females.

The majority of cases occur in the knee.

Gross pathologic examination of the lesion reveals a frondlike contour.

There is subsynovial collection of mature adipocytes which project in a villiform fashion, into the joint space.

The villi are covered by hyperplastic, inflamed synovium.

 

Further reading:

Baked beans in the knee? An odd-looking synovial swelling in the knee joint.

Intra-articular lipoma arborescens of the knee joint.

Bilateral knee lipoma arborescens combined with osteoarthritis in elderly patients.

Synovial lipoma arborescens

Lipoma arborescens of knee joint: role of imaging.

Lipoma arborescens: recurrent knee effusions with positive cyclic citrillunated peptide.

Polyarticular lipoma arborescens with inflammatory synovitis.

Synovial lipomatosis of the knee in an adolescent girl.

Synovial lipomatosis arborescens of the peroneal tendon sheath.

Bilateral knee lipoma arborescens: a case report.

Lipoma arborescens occurring in both knees at different times: a case report

Villous lipomatous proliferation of the synovial membrane (lipoma arborescens)

 

 

Dr Sampurna Roy  MD

Consultant  Histopathologist (Kolkata - India)


 

 

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