Which one of the following is the most critical component fo…

Which one of the following is the most critical component for successful resuscitation of a patient in cardiac arrest? Performing high quality CPR  Providing advanced interventions immediately upon recognition of cardiac arrest  Obtaining a 12-lead ECG to identify the location and extent of a possible acute MI  Providing time for critical advanced procedures despite prolonged interruptions in CPR 

A 33-year old afebrile man has had a feeling of heaviness in…

A 33-year old afebrile man has had a feeling of heaviness in his right testis for the past 5 months. On physical examination, it is noted that there is enlargement of his right testis, but his left testis is normal. An ultrasound is performed and indicates the presence of a 3 cm solid mass in his right testis. Laboratory tests reveal normal serum levels of hCG and alpha-fetoprotein, but elevated levels of placental alkaline phosphatase. The right testis is removed surgically and gross examination indicates the presence of a firm, lobulated mass without hemorrhage or necrosis.  Histologic examination indicates the mass is composed of large, glycogen-rich homogeneous cells. Occasional syncytiotrophoblasts are also noted histologically. Which of the following neoplasms is he most likely to have?