Germ cell tumor classification

Types	Subtypes	Signs and Symptoms	Histopathology	Lab finding	Treatment	Prognosis
Gonadal	Seminoma	Painless testicular mass with discomfort Back pain Abdominal discomfort Abdominal mass.	Gross: pale gray to yellow nodules that are uniform or slightly lobulated and often bulge from the cut surface	Complete blood count and blood chemistry tests. Abnormal serum tumor marker levels (LDH, HCG). CT: Metastases to the para-aortic, inguinal, or iliac lymph nodes. Visceral metastasis may also be seen. Pelvic MRI: may be diagnostic. multinodular tumors of uniform signal intensity Hypo- to isointense on T2-weighted images and inhomogenous enhancement on contrast enhanced T1-weighted images. Other diagnostic studies for seminoma include biopsy, FDG-PET scan, and bone scan.	Radical inguinal orchiectomy is the first treatment for any stage of testicular seminoma. Usually done as diagnostic and therapeutic.	Prognosis of seminoma is good for all stages with greater than 90% cure rate. The International Germ Cell Cancer Consensus Group divides seminoma into two prognosis groups: good and intermediate. Common complications of seminoma include recurrence, lymph node metastasis, distant metastasis, and secondary malignancies.
Dysgerminoma (Ovarian germ cell tumor)	Depend on the type of the tumor and its potential to produce hormonalmaterials Abdominal pain or distention Menstrual irregularities Symptoms of virilization Rapidly growing abdominal/pelvic mass Acute abdominal pain from complications such as: * Necrosis * Capsular distention * Rupture or torsion and or simply they can be asymptomatic.		The majority of ovarian germ celltumors have a solid and cystic appearance with areas of hemorrhageand necrosis a uniform “fried egg” appearance (dysgerminoma)
Germinoma
Extragonadal	Embryonic
Teratoma
Extraembryonic
Coriocarcinoma
Yolk sac tumor