[Oradlist] TMJ: synovial chondromatosis.?

[Rejane Faria Ribeiro-Rotta]

Dear Allan,

We are just finishing a case report to submit to publication of a TMJ
chondrossarcoma in a 11-years-old child. Until 2008 only 20 cases have been
reported in the english literature and the youngest patient is 17 years-old.
One important part of the discussion is the differential diagnosis which
includes Synovial Chondromatosis. This benign proliferative and metaplastic
disorder of the synovium presents as two forms, secondary synovial
chondromatosis, typified by the presence of intra-articular
osteocartilaginous loose bodies against a background of degenerate joint
disease, is common, whereas the primary form, in which synovial soft tissue
masses are the predominant feature, is relatively uncommon.  Primary
synovial chondromatosis should be considered in the differential diagnosis
of the monarticular presentation of an intra-articular soft tissue mass,
particularly in the presence of bone erosions.  Permeation of trabecular
bone with "filling up" of marrow spaces should be considered a sign of
malignancy.
So, I would consider CT (including contrast injection) and/ou MRI.
Regards
Rejane



2008/9/28, Leif Kullman <leikul at yahoo.com>:
>
>   Dear Allan, it could be of course, as you suggest synovial
> chondromatosis, but more differential diagnosis are possible like for
> example chondrocalcinosis or some sort of tumor. Can you give us some
> history of the patient please? What about clinical findings?
> Do you have access to a CBCT, more and better imaging could be useful.
>
> Best regards Leif
>
> Leif Kullman DDS, PhD
> Assoc. Professor
> Oral and Maxillofacial Radiology
> Faculty of Dentistry
> Kuwait University
>
> --- On *Sat, 9/27/08, Allan Abuabara <allan.abuabara at gmail.com>* wrote:
>
>
> From: Allan Abuabara <allan.abuabara at gmail.com>
> Subject: [Oradlist] TMJ: synovial chondromatosis.?
> To: "Oral Radiology Discussion Group" <oradlist at lists.ucla.edu>
> Date: Saturday, September 27, 2008, 7:56 PM
>
>  Dear Colleagues,
>
> Attached (panoramic TMJ radiograph -  open mouth and maximum
> intercuspidation - MI) is a case of a woman, 17-y-o with pain in TMJ. The
> images is from the left TMJ but the radiopaque images appear on both sides.
>
> My suspicion is synovial chondromatosis, although the incidence is more
> common during the fourth and fifth decades of life.
>
> What do you think about it?
> Thanking you.
>
> Allan Abuabara.
> DDS, Specialist in Oral & Maxillofacial Radiology.
> Joinville, SC - Brazil.
>
>
>
>
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-- 
***************************************
Rejane Faria Ribeiro-Rotta
Professora associada, Departamento de Ciências Estomatológicas
Faculdade de Odontologia, Universidade Federal de Goias
rejanefrr at gmail.com, rejanefrr at odonto.ufg.br

Rejane Faria Ribeiro-Rotta, DDS, MS, PhD
Associate Professor, Department of Oral Medicine, School of Dentistry,
Federal University of Goias, Brazil
rejanefrr at gmail.com, rejanefrr at odonto.ufg.br
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