OBJECTIVE Primary extragonadal germ cell tumors are rare and their histogenetic origin is not clear. We describe two cases presenting as primary retroperitoneal germ cell tumors without clinical evidence of testicular tumor. METHODS A 21 and 18 years-old patients presented retroperitoneal choriocarcinoma and yolk sac tumor, respectively. In both cases, testicular palpation was not suspicious ...

Human chorionic gonadotropin (HCG) is an important tumor marker in the diagnosis and monitoring of treatment response childhood cancers such as germ cell tumors liver tumors. The effect chronic kidney disease (CKD) on increased HCG not a well-researched issue. elevation unknown cause only causes diagnostic confusion, but also economic loss by necessitating many unnecessary examinations.In curre...

We have developed a reverse transcription-PCR method that clearly distinguishes between the RNA transcripts of all four alkaline phosphatase (AP) genes. If compared to the methods used up to the present, the main advantages of the reverse transcription-PCR method presented are its specificity and high sensitivity. The germ cell AP and the placental AP, which are the two most closely related AP ...

Objective: We report a case that we believe to be the largest example of a testicular mixed germ cell tumor with a clearly defined histology pattern. Clinical Presentation and Interventions: A 21-year-old patient consulted a urologist concerning a giant testicular mass. At the time of presentation the tumor measured 29 ! 20 ! 16 cm, with a weight of 4,850 g. Serum ·-fetoprotein was over 15,000 ...

BACKGROUND Malignant ovarian germ cell tumor is a rare type of disease, which generally has a good prognosis due to the high chemosensitivity of this type of tumor. Fertility preservation is an important issue because malignant ovarian germ cell tumor commonly affects young women. Although conservation is the standard for early stage, it becomes more debatable as the disease progresses to more ...

background: niche cells, regulating spermatogonial stem cells (sscs) fate are believed to have a reciprocal communication with sscs. the present study was conducted to evaluate the effect of ssc elimination on the gene expression of glial cell line-derived neurotrophic factor (gdnf), fibroblast growth factor 2 (fgf2) and kit ligand (kitlg), which are the main growth factors regulating sscs deve...

Testicular seminoma is a relatively common testicular cancer; however, testicular seminoma with pseudocyst is an extremely rare. The 'burned-out' phenomenon in germ cell tumors refers to a germ cell tumor in extra-gonadal tissues with spontaneous regression of an intra-gonadal tumor. We present a case of the testicular seminoma with pseudocyst and coagulation necrosis like burned-out tumor with...