What is a Nonseminomatous germ cell tumor?

Nonseminomatous germ cell tumors are cancerous tumors commonly found in the pineal gland in the brain, in the mediastinum, or in the abdomen. They originate from cells that were meant to form sex cells (i.e., sperm or eggs).

What is a mediastinal germ cell tumor?

Mediastinal germ cell tumors are a heterogeneous group of benign and malignant neoplasms that originate from primitive germ cells left in the mediastinum during early embryogenesis. The anterior mediastinum is the most common extragonadal primary site of germ cell tumors.

What is the most common malignant germ cell tumor?

The most common types of germ cell tumors include: Teratomas. These tumors are benign, but can become malignant. Teratomas are the most common type of germ cell tumor to develop in extragonadal (not in the ovary or testes) areas.

What does Nonseminomatous mean?

(NON-seh-mih-NOH-muh) A type of cancer that begins in cells that form sperm or eggs. There are several types of nonseminoma tumors, including embryonal carcinoma, malignant teratoma, choriocarcinoma, and yolk sac tumor. These tumors are usually made up of more than one type of cancer cell.

Where do Germ cell tumors arise from?

Germ cell tumors arise in the ovaries (in girls), the testes (in boys), and in several other locations, including the lower back (common in infancy), the abdomen, the chest, and within the brain. Germ cell tumors starting within the brain are discussed further under Brain Tumors.

Which of the following is a tumor marker of Nonseminomatous germ cell tumors?

Serum hCG and AFP are the most important tumor markers. AFP levels are elevated in 50-70% of patients with NSGTs, and hCG levels are elevated in 40%-60%.

What causes a germ cell tumor?

Changes in the genes of a germ cell can cause it to grow out of control, which leads to a tumor. Doctors aren’t sure what triggers that change. Still, you may be more likely to a germ cell tumor if you have: An undescended testicle (one or both testicles haven’t dropped into the scrotum)

What is the prognosis for malignant germ cell tumor?

Prognosis. Cervical teratomas may frequently lead to airway problems and death when they are large. Before current developments in chemotherapy, the 10-year survival rate for malignant germ cell tumors ranged from 25% for embryonal carcinoma to 75% for dysgerminoma. Today, overall survival rates are greater than 90%.

Is this a mediastinal tumor?

Mediastinal Tumors Definition. Mediastinal tumors are growths that form in the mediastinum. Alternative Names Causes. Symptoms. Exams and Tests Treatment. Outlook (Prognosis) The outcome depends on the type of tumor. Possible Complications. When to Contact a Medical Professional.

What is a mixed germ cell tumor?

Testicular mixed germ cell tumors are, as the name suggests, testicular tumors composed of two or more types of germ cell tumor. They are considered to be part of non-seminomatous germ cell tumors, as it is that component which dictates prognosis and treatment.