Benign Soft Tissue Tumors
Among the most common tumors which can be classified as benign soft tissue tumors are lipoma, angiolipoma, fibroma, benign fibrous histiocytoma, neurofibroma, schwannoma, neurilemmona, hemangioma, giant cell tumor of tendon sheath, and myxoma. Some conditions, like nodular fasciitis, are not tumors, but may require similar treatment. A small number of these tumors may be related to an underlying inherited condition.
The majority of the tumors in this category are benign tumors of fat called lipomas. Lipomas frequently occur just beneath the skin as a soft painless bulge which grows slowly over a period of months to years. These tumors represent very little risk to the patient and can be adequately treated by a "marginal excision" which is commonly described as "shelling out the tumor." This type of treatment has a high rate of success. However, not all of these lumps need to be removed. Your physician may determine that the lipoma needs only to be observed. Some of these lipomas are deep below the fascia or with the muscle group. Care needs to be taken to distinguish these deep "lipomas" from cancers and lower grade cancers.
In settings where the tumor is not a benign lipoma, the strategy of "shelling out the tumor" can spread a tumor, which might otherwise be easily treated by a more careful surgical procedure. Malignant tumors that are discovered unexpectedly can often be spread in this way.
Therefore, if the lump does not feel
like a lipoma, if it is seen to grow, or causes pain, it should be assessed
carefully and thoughtfully. Often the use of MRI scans can assist in
determining both the location and the internal characteristics of the tumor.
A soft tissue mass, which does not
have the appearance of a lipoma on MRI, needs to be approached more cautiously.
Often, a minimally invasive biopsy is desirable, prior to commitment to any
larger surgical procedure. The vast majority of benign soft tissue tumors can
be treated with a single clean surgical procedure and minimal risk to
surrounding normal blood vessels, nerves, muscle or bone. This provides the
patient with the greatest possible functional recovery and the least chance of
local recurrence of the tumor. In general, the orthopaedic surgeon should
consider a biopsy before proceeding with an excision of a tumor. Only on rare
occasions should the orthopaedic surgeon consider resection without a biopsy.
What are the symptoms?
Benign soft tissue tumors may or may
not cause pain and vary widely in appearance. If the tumor grows or causes
pain, it should be assessed by a doctor.
What are my treatment options?
Depending on the type of tumor you
have, your doctor may or may not recommend surgery. Tumors are removed
surgically with the goal of minimizing risk to surrounding normal blood
vessels, nerves, muscle or bone.