Germ cell germs are not seminalGerm cell tumors are sometimes called mixed malignant germ cell tumors. Also known as “secretory tumor” because secrete a compound called alpha-fetoprotein (AFP). Unfermented germ cell tumors also affect a hormone called hCG above 50 IU / I. The term around germless germ cell tumors can be very complex and confusing. If a child is diagnosed with a germless germ cell tumor, the doctor may list the tumor to include one or more of the following:
- Fetal carcinoma
- Vegetable carcinoma
- U yolk sac
- U are not fluent
Germ cell tumorsPurely soft-cell tumors do not secrete AFP and may secrete hCG at levels lower than 50 IU / I. Germ cell tumors also include one or more parts for germless germ cell tumors listed above. Any germ cell tumor that is not a pure germ is called a germless germ cell tumor even if it contains some germ cell tumors.
About tumor marker-Unfertile germ cell tumors produce substances called tumor markers that can be detected in the blood or cerebrospinal fluid (fluid in the brain and spinal cord, also known as CSF). Some examples of tumor marker are hCG and AFP, mentioned above. They are called tumor markers because they are measurable and their content can be used as a marker for certain tumors during treatment and monitoring. AFP is a marker of yolk sac and hCG is a marker of vegetable carcinoma. -Seminal germ cell tumors other than vegetable carcinomas may also lead to small increases in hCG. Usually increases to more than about 50 IU / I. In most western countries, germ cell tumors with levels of hCG below 50 are called germ cell tumors; Germ cell tumors with a hCG greater than 50 are called unfertilized. -Any increase in AFP indicates that germ cell tumors are unfertilized. -A number of other tumor markers are in the process of investigating, especially the study of germ cell tumors. A marker currently under study is called an s-kit. -The tumor marker may increase both in blood and CSF, either in the blood or in CSF. This explains why doctors recommend tumor markers to be measured both in blood and CSF whenever possible.
Reason?-During the normal development of a baby, a germ cell develops into an egg cell (in a girl) or a sperm cell (in a boy). In rare cases, these cells invade or misplace in a child’s body, such as a brain where a tumor may appear. These tumors can spread to other parts of the brain or spinal cord through cerebrospinal fluid (CSF).
How many young children have?Germ cell tumors account for about 30% of pediatric central nervous system tumors in Europe and the US. However, this type of tumor is more common in Asian countries. In Japan, germ cell tumors account for 18% of brain tumors in people under 20 years of age. Germ cell tumors largely affect adolescents and young people. Most commonly diagnosed between the ages of 13 and 15. In half of all children with germ cell tumors, the tumor is located in a part of the brain called the pineal region. The other half is located in different parts of the brain. Approximately 50% to 65% of germ cell tumors are seminal and the remainder is unfertilized.
What are the medical symptoms of germ cell tumors?Some symptoms of germ cell tumors depend on the location of the tumor in the brain. Tumors located in the pineal region often have symptoms of increased intracranial pressure:
- Head straps in the morning
- Nausea and vomiting in the morning
- Blurred vision
- Abnormal eye movements