Have you ever heard of 'smooth muscles'? These are not like the muscles in our arms and legs that we control consciously. They are a special type of muscle that functions automatically in organs inside our bodies, such as our intestines, blood vessels, and uterus. Imagine, a rare and rather fast-spreading cancer can develop in such a place. That cancer is called Leiomyosarcoma, or LMS. Although this name is a bit complicated, understanding it simply can be very important for you and your loved ones.
What exactly is leiomyosarcoma (LMS)?
Simply put, leiomyosarcoma (LMS) is a rare, aggressive type of cancer that starts in the smooth muscles in our bodies. These smooth muscles are found in many places in our bodies. For example:
- Bladder
- Blood vessels
- Large and small intestine
- Stomach
- Uterus
This cancer, called LMS, belongs to a large group of cancers called soft tissue sarcomas . One of the dangerous things about this cancer is that these cancer cells grow very quickly. Sometimes, the tumor can double in size in as little as a month. Also, these cancer cells can travel through the bloodstream and spread to any soft tissue in the body.
Some people do not experience any symptoms in the early stages. By the time symptoms appear, the disease may have become quite severe. Therefore, it can be life-threatening. However, if detected early and treated properly , there is a high chance of a complete recovery.
It's normal to feel overwhelmed and shocked when you're diagnosed with cancer. Remember that you're not alone. Your medical team is there for you. They can provide you with any information or support you need.
What are the main types of LMS cancer?
LMS cancer can be divided into three main types, based on where it develops.
| Cancer type | Origin and description |
|---|---|
| Somatic soft tissue LMS | This is the most common type of LMS. It develops in the connective tissue of the body. Uterine leiomyosarcoma, which develops in the uterus, is a good example of this. |
| Cutaneous or subcutaneous LMS | This type occurs in tiny muscles called piloerector muscles in the skin and eyes. These muscles are responsible for the dilation and enlargement of the pupil of our eye. |
| LMS of a vascular origin | This is the rarest type of LMS. The cancer develops in a major blood vessel, such as the pulmonary arteries and inferior vena cava, leading to the lungs. |
What are the symptoms of this cancer?
The symptoms of LMS cancer vary greatly depending on the size of the tumor and its location. Some people may not have any symptoms at first. However, as the tumor grows, some symptoms may begin to appear.
| Characteristic type | Things to see |
|---|---|
| Common symptoms | |
| A lump | A painless, firm lump or swelling. |
| Other features | Bloating, fever, nausea and vomiting, pain, extreme fatigue, weight loss for no apparent reason. |
| If it is cancer of the digestive system (intestines, stomach)... | |
| Stomach pain | Frequent stomach ache. |
| Changes in stool | Black stools due to blood passing through them. |
| Other features | Loss of appetite, nausea, and vomiting. |
| If it is uterine cancer... | |
| Abnormal bleeding | Abnormal bleeding between periods or after menopause. |
| Other features | Frequent need to urinate, unusual vaginal discharge. |
What is the reason for the development of LMS?
Doctors have not yet found the exact cause of this. However, it is believed that two main factors may play a role. One is hereditary genetic changes. The other is that during life, random changes in one's own genes cause normal cells to grow uncontrollably and become cancer cells.
Researchers have found a link between LMS cancer and certain genetic conditions. Some of these conditions include:
- Gardner syndrome
- Gorlin syndrome
- Hereditary retinoblastoma
- Li-Fraumeni syndrome
- Neurofibromatosis type 1 (NF1)
- Tuberous sclerosis
How to diagnose this disease?
If you develop any symptoms, your doctor will first examine you physically and ask about your symptoms. Then, they will order some special imaging tests to determine the exact size and location of the cancer.
- Angiography - to examine blood vessels
- CT scan (Computed tomography - CT scan)
- MRI scan (Magnetic resonance imaging - MRI)
- PET scan
However, to confirm this disease 100%, a biopsy is definitely necessary.
A biopsy involves taking a very small piece of tissue from the cancerous tumor and sending it to a laboratory for examination under a microscope. A pathologist examines the tissue to determine whether it is LMS cancer or not.
What are the treatments for LMS?
Treatment depends on the size, type, location of the cancer, and whether it has spread. There are several main treatment options.
- Surgery: Whenever possible, the main treatment for LMS is surgery to completely remove the tumor. The goal is to prevent the cancer from coming back.
- Chemotherapy: If the tumor is large, or if cancer cells have spread to other parts of the body, the doctor may recommend chemotherapy.
- Radiation therapy: Sometimes radiation therapy is given before surgery to shrink the tumor (neoadjuvant therapy). It is also used after surgery to kill any remaining cancer cells (adjuvant therapy).
- Targeted therapy: This is a newer treatment method. It uses drugs that target and damage only cancer cells. This treatment may be given alone or in combination with other treatments.
What is the outlook for this disease?
The prognosis for LMS varies greatly from person to person. It is mainly influenced by the stage, size, and location of the cancer. The most important thing is that if the disease is detected and treated early, it can be completely cured.
However, if the disease is diagnosed late, that is, at an advanced stage like Stage 4, treatment is a bit more complicated. In such a case, although the disease cannot be completely cured, treatment can control it and extend the patient's life.
Survival rates are just statistics based on data from people who have had this disease in the past. Therefore, do not make decisions about your future or worry about it based on those numbers. The best person to know exactly what your condition is is the doctor who is treating you. Talk to him/her about this openly.
Important questions to ask your doctor
When you find out you have LMS cancer, it's normal to have a lot of questions in your mind. It's important to ask your doctor these questions and get a clear understanding of your condition.
- Where is my cancer located in my body?
- Has the cancer spread to other places?
- What stage is my cancer in?
- What treatment options do I have?
- What are the risks and side effects of those treatments?
- What is the chance of cancer coming back after treatment?
- What can you tell me about the future of my illness?
When you have a rare disease like this, it's normal to feel alone. If you can, join a support group for people with this condition. It can be a great source of mental strength. Remember, your medical team is always there to help you.
Take-Home Message
- Leiomyosarcoma (LMS) is a rare, fast-growing type of cancer that develops in smooth muscle.
- Symptoms depend on the location of the cancer. Sometimes there may be no symptoms at all in the early stages.
- If you experience symptoms such as an unusual lump in your body, unexplained pain, or weight loss, see a doctor immediately.
- This disease can be completely cured with early detection and proper treatment.
- It's important to talk openly and honestly with your doctor about your condition, treatment, and future. You are not alone.
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