Embryonal, also know as ERMS, is the most common type, it usually occurs in the neck area, head, urinary organs or genital. ERMS cells look like developing muscle cells in a 6-8 week old embryo. Embryonal RMS has two subtypes, botryoid and spindle cell. Alveolar, also known as ARMS, often occurs in the large muscle of the arms, legs, and trunk. ARMS tends to expand and enlarge quicker than ERMS and requires the …show more content…
Stage I is when the tumor is localized to the orbit and head or to the genitourinary regions (not including the bladder or prostate). Stage II is when the tumor is localized to any other primary site not included in the stage I criteria. The primary tumor is smaller than 5cm in diameter and there is no involvement of the regional lymph nodes. Stage III means the primary tumor is bigger than 5cm in diameter and there is involvement of the regional lymph nodes. Stage IV is when the tumor has spread to distant sites. The stages are put into three groups, the low-risk group, in which stage I and II fall into; 90% of these children will be cured. Then there is the intermediate-risk group, where stage III falls into, about 60-80% of these children will survive. Lastly the high-risk group, where of course stage IV falls into, only 20-40% of these children will