What is the most common mediastinal germ cell tumor?
Histologically, teratomas are the most common mediastinal germ cell tumor. At diagnosis, calcification of lymphoma is unusual, and the calcifications often present in teratoma may suggest the diagnosis.
How rare is a germ cell tumor?
Germ cell tumors are rare. Germ cell tumors account for about 2 to 4 percent of all cancers in children and adolescents younger than age 20. Germ cell tumors can spread (metastasize) to other parts of the body. The most common sites for metastasis are the lungs, liver, lymph nodes, and central nervous system.
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.
Do germ cell tumors grow fast?
There are two types of germ cell tumors that start in the gonads, or reproductive organs: seminomas, which are slower-growing, and nonseminomas, which are faster-growing tumors.
What is the prevalence of mediastinal germ cell tumors?
Mediastinal germ cell tumors account for 1–15% of adult anterior mediastinal tumors. A gonadal primary must always be excluded when making the diagnosis of primary mediastinal germ cell tumor. Males are far more likely to have mediastinal germ cell tumors than are females.
Is the mediastinal lymph node a metastatic site for gonadal germ cell tumors?
It should be remembered that mediastinal lymph nodes are metastatic sites for primary gonadal germ cell tumors, so that a thorough clinical evaluation is necessary to exclude the latter possibility. Publication types Review MeSH terms
What is a teratoma of the mediastinum?
Mature teratomas are the most frequent histology encountered in the mediastinum (see mediastinal teratoma) and account for ~60% (range 50-70%) of all mediastinal germ cell tumors 2.
What are the histologic findings of anterior mediastinal mass?
Germ cell tumors are one of the causes of anterior mediastinal mass, and any of the germ cell histologies may be identified. They can therefore be divided histologically into: seminoma. non-seminomatous germ cell tumors (NSGCT) embryonal cell carcinoma. choriocarcinoma. yolk sac tumor.