Hypertrophic Osteoarthropathy

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                      General Information



Hypertrophic osteoarthropathy is a disease that involves an

increase in the thickness of the tissue immediately surrounding

bone.  This tissue is called the periosteum.  Radiographs

(x-rays) of the diseased bones show noticeable thickening, with

a rough, irregular surface.  Leg bones are usually involved.



Hypertrophic osteoarthropathy does not develop alone.  It is

caused by another disease at a different location in the body.

The most common cause is a tumor or other disease of the lungs.

For this reason, hypertrophic osteoarthropathy is thought of as

a sign of a more serious disease.



                 Important Points in Treatment



1.  Treatment of hypertrophic osteoarthropathy depends entirely

    on the success of treatment of the underlying disease;

    however, medication for pain may help make your pet more

    comfortable.



2.  Because many cases are due to lung cancer, treatment may be

    of little benefit.  The doctor will advise you regarding the

    availability and effectiveness of treatment.



3.  Special instructions: