Soft Tissue Cancer

Soft Tissue Cancer, soft tissue cancer symptom, soft tissue cancer diagnosis, soft tissue cancer  treatment

What is soft tissue cancer?

All malignant tumors that originate in the fiber, fat, smooth muscle, striated muscle, synovial membrane, blood vessel, lymphatic vessel and locate in soft tissues (with the exception of visceral organs) are called as soft tissue cancers or soft tissue sarcomas as well. Sarcoma can occur in the soft tissues throughout the body, especially in the limbs, trunk, retroperitoneal part and pate; among these, the limbs are mostly seen, about 60% in all cases. The incidence rate of soft tissue cancer is approximately 2/100,000 to 3/100,000, which amounts for 1% among adult’s malignant tumors, but it has no sexual orientation. Generally the elderly have a higher prevalence. Soft tissue cancer is very easy to spread to the surrounding normal tissue and its fatality rate is 2%.

Survival rate of soft tissue cancer

Prognosis of soft tissue cancer patients is better than that of epithelium tumor patients and its 5-year survival rate is about 50%. Prognosis mainly depends on tumor’s condition and invasion severity of adjacent organs, and the prognosis of limbs is prior to other parts. For patients who have occurred metastasis but treatments still can control the condition, the survival rate for most of these patients after being diagnosed with metastasis is about 1 year.

Causes of soft tissue cancer:

Currently, causes of soft tissue cancer have not been defined yet, but it is well-known that the causes of soft tissue cancer are not single.

Congenital malformation: angeioma is commonly seen among infants and children. The vast majority of such lesions are found after birth. As children grow, vascular lesions will grow correspondingly and proportionally and never fade away without rapid growth history.

Familial heredity: many studies show that many tumor cells manifest chromosomal abnormalities. People who have chromosomal abnormalities would own higher incidence rate than that of normal people, and also have the characteristic of familial heredity.

Foreign substance stimulation: according to animal experiment and clinical observation, long term of foreign substance stimulation on the body may induce soft tissue cancer.

Chemical materials stimulation: an epidemiological survey has discovered that workers who are long-term exposed to polyvinyl chloride have high risk of suffering from angiosarcoma of the liver

Trauma: a considerable portion of soft tissue cancer patients have clear trauma history on the site of tumor.

Staging of soft tissue cancer

Tumor staging depends on the size of the tumor, pathological grading and whether there is a nearby lymph nodes metastasis or distant metastasis. Soft tissue cancer of adults shall be divided into 4 stages: Stage I, II, III means there is no nearby lymph nodes metastasis or distant metastasis. During Stage IV, if there is regional lymph nodes metastasis, then it is Stage IVa; if there is distant metastasis, then it is Stage IVb. Pathological grading mainly depends on tumorous mitotic values.

The first grading: division of tumor cells is slow and metastases seldom occur;

the second grading: tumor cells have moderately differentiated with the probability of metastasis being less than 20%;

the third grading: division of tumor cells is relatively quick with the probability of metastasis being exceeding 50%.

5-year survival rate for people with low differentiated tumor usually exceeds 75%; while for people with high differentiated tumor, it is less than 25%.

What are the symptoms of soft tissue cancer?

How to diagnose?

Treatment methods for soft tissue cancer

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