Varicocele: new perspectives on an old problem

A leading infertility surgeon's editorial preview of a themed issue, containing no original data of its own

Journal: Fertility and Sterility | Published: 2026-05-12 | Type: Journal Article, Review | PMID: 42128196 Authors: Schlegel Peter N (New York Men's Health Medical, PLLC, New York, New York) Funding/COI: Funding not listed; author reports no conflicts of interest

Summary

This is a single-author editorial introducing a themed issue of Fertility and Sterility devoted to varicocele. It restates the standard clinical picture: varicocele can impair sperm production, cause pain, affect testosterone, play a role in non-obstructive azoospermia, and in adolescents may warrant repair when testicular growth is affected. The abstract contains no original data, effect sizes, or sample sizes because it isn't reporting a study; it's a framing piece pointing readers toward the other papers in the issue.

Claims

• Varicocele has a substantial adverse effect on sperm production and male fertility
• Varicocelectomy has an important role in treating infertility
• Varicocele may contribute to pain and may affect testosterone production
• Varicocele may be relevant even in the most severe form of male infertility, non-obstructive azoospermia
• Adolescents with varicocele may benefit from repair, particularly if testicular growth has been impaired

None of these claims come with numbers, effect sizes, or citations in the abstract itself.

Study Quality

This isn't a systematic review or meta-analysis; it's an editorial/narrative overview introducing a journal issue. There's no described search strategy, no inclusion criteria, no data extraction, and no synthesis method — the abstract reads as a summary of clinical consensus rather than a structured evaluation of evidence. Every claim in it is presumably backed by the papers that follow in the same issue, but readers can't assess that from this piece alone.

Red Flags

• No quantitative data anywhere in the abstract: no sample sizes, no effect sizes, no confidence intervals
• No described methodology for how the literature was selected or weighed
• Single author, so no independent editorial check on which claims get emphasized
• Functions as promotional framing for the rest of the issue rather than a standalone evidence review

Strengths

• Written by a high-profile figure in male infertility surgery, which lends clinical credibility to the framing even without primary data
• Covers a broad and clinically relevant set of varicocele-related questions: fertility, pain, testosterone, azoospermia, and adolescent repair
• Clean disclosure: no funding claimed, no conflicts of interest declared

Verdict

There's nothing here to evaluate as evidence — it's a table of contents dressed up as an editorial. Worth noting only as a pointer to whatever primary studies actually appear elsewhere in this Fertility and Sterility issue; skip it if you're looking for numbers.