Renal immature teratoma in a male adult: A case report and literature review.

Rationale: Teratomas commonly arise in the gonads, including ovary and testis. The kidney is one of the most rare regions of primary teratoma. To date, about 19 cases of renal teratoma have been reported, and only 3 articles have reported renal immature teratoma; however, all of them occur in infant or children.

The prognostic value of microRNA-183 in human cancers: A meta-analysis.

Background: Several studies have been conducted to explore the prognostic value of miR-183 in different types of cancer; however, their results were controversial. Therefore, the present meta-analysis was conducted to comprehensively evaluate the prognostic value of miR-183 expression level in cancer.

Methods: A comprehensive literature search was carried out by searching PubMed and EMBASE database between January 1966 and April 2017.

Vasectomy and the risk of prostate cancer: a meta-analysis of cohort studies.

Background: The relationship of vasectomy to prostate cancer has great public health significance. However, the results of observational studies were conflicting. To determine whether vasectomy is associated with the risk of prostate cancer, we performed a meta-analysis of cohort studies.

Metformin therapy and prostate cancer risk: a meta-analysis of observational studies.

Objective: Several observational studies have shown that metformin therapy may modify the risk of prostate cancer. We carried out a meta-analysis of relevant studies evaluating the effect of metformin therapy on prostate cancer risk.

Methods: We searched pubmed database (January 1966-February 2014) for case-control and cohort studies that assessed metformin therapy and prostate cancer risk.