With the use of immunohistochemical techniques, seven mouse monoclonal antibodies and the lectin from Ulex europaeus, detecting blood group antigens of the ABH and Lewis systems, have been used to define the distribution of these antigenic structures in germ cell tumors. The reagents used recognize the following blood group antigens: A, B, H, Lewisa, Lewisb, X (Lewisx), Y (Lewisy), and type I p...

Yolk sac tumors, the most common germ cell tumor in young infants and children, however, are distinctly uncommon site in the vagina. A baby with bleeding per vaginum since one month presented at 9 months of age with raised Serum αfetoprotein (AFP) but normal levels of ß-HCG and CA-125 is reported. Fine needle aspiration from the mass yielded material suggestive of a germ cell tumor. The histopa...

Malignant germ-cell tumors (MGCT) are rare tumors of childhood accounting for less than 3% of pediatric malignancies. Yolk sac (endodermal sinus) tumor is one of the malignant germ cell tumor that usually involves the gonads (ovaries and testes). Its occurrence in the vagina is extremely rare. We report a 6-months old girl presented with a vaginal mass diagnosed as a yolk sac tumor. This diagno...

A 45-year-old female patient presented with symptoms of polydipsia and polyuria, menopause, headache, gait disturbance and deteriorated mental state. Brain magnetic resonance imaging (MRI) showed an irregular mass in the anterior third ventricle. The tumor was excised using a transfrontal approach from the anterior section of the third ventricle. The histological diagnosis was of an intracrania...

BACKGROUND Primary mediastinal yolk sac tumor, which is also known as endodermal sinus tumor, is a rare but lethal neoplasm, and it is a kind of mediastinal non-seminomatous germ cell tumor. The current standard treatment in mediastinal non-seminomatous germ cell tumors is chemotherapy combined with postchemotherapy residual mass resection. We report on seven cases of primary mediastinal yolk s...

The most frequent location for non-metastatic germ cell tumors is the anterior mediastinum. Primary lung germ cell tumors are an exception in medical literature being limited to just a few cases of choriocarcinomas and rare cases of yolk-sac tumors. In this paper, we report a case of a pulmonary yolk-sac tumor with atypical characteristic as regards its diagnosis and treatment.

Yolk sac tumor is a non-seminomatous testicular germ cell rarely found in adults. It an extra-embryonic differentiated tumor. reproduces structures evocative of the yolk humans. We report clinical case 37-year-old patient, with no previous history, who followed up for left testicle revealed by increase size and induration testicle. The orchiectomy, performed through inguinal approach, allowed u...