[Clinicopathologic analysis of spermatocytic seminoma].

Objective: To study the clinicopathologic features and biological behavior of spermatocytic seminoma.

Methods: A retrospective analysis of patients diagnosed as seminoma, spermatocytic seminoma between January 2003 and May 2011, was performed. Clinical data, HE stained section and immunohistochemical staining (SP method) were reviewed with follow-up.

Ovarian Sertoli-Leydig cell tumor in a 9-month-old infant with special histologic pattern.

A 9-month-old infant with left ovarian Sertoli Leydig cell tumors (SLCTs) was reported and the special histological pattern was that the main components of the tumor were leydig cells. She was the youngest reported case of the tumor. The patient had increased serum estradiol and A-Fetoprofein (AFP) and a left oophorectomy was performed.

The pediatric renal clear cell "sugar" tumor: pseudo-alveolar structure mimicking clear cell renal carcinoma.

The primary extrapulmonary sugar tumor (PEST) is rare. Up to now, only 16 cases of PEST have been reported, including 5 pediatric cases. We report a renal benign PEST in a 16-year-old boy, which is the first such case to be reported in the pediatric kidney.