03-25-2007, 03:44 PM
A 12-year-old girl presents to your office after having been discharged from the emergency department, where she was evaluated for abdominal pain. Imaging studies identified a 9-cm solid mass in the left ovary. No other abnormality was found. Results of laboratory tests ordered by her pediatrician were:
Parameter Finding (normal range)
hCG 2 mIU/mL (nonpregnant women, 0-5 mIU/mL)
Cancer antigen 125 U/mL (<35 U/mL)
Alpha-fetoprotein 117 ng/mL (0-44 ng/mL)
Inhibin A 98 pg/mL (age 11-13 years, <160 pg/mL)
Based on these results and the clinical findings, what is the most likely diagnosis?
A. Choriocarcinoma
B. Dysgerminoma
C. Endodermal sinus tumor
D. Low-malignant“potential ovarian cancer
Parameter Finding (normal range)
hCG 2 mIU/mL (nonpregnant women, 0-5 mIU/mL)
Cancer antigen 125 U/mL (<35 U/mL)
Alpha-fetoprotein 117 ng/mL (0-44 ng/mL)
Inhibin A 98 pg/mL (age 11-13 years, <160 pg/mL)
Based on these results and the clinical findings, what is the most likely diagnosis?
A. Choriocarcinoma
B. Dysgerminoma
C. Endodermal sinus tumor
D. Low-malignant“potential ovarian cancer