- Design
- Expert consensus classification proposal (Testicular Sex Cord-Stromal Tumour group)
- Population
- Testicular sex cord-stromal tumours
- Primary outcome
- A four-tier structure: group, category, entity and histological pattern
- Effect
- Framework only; no effect size reported
A group of genitourinary pathologists, the Testicular Sex Cord-Stromal Tumour group, working with two international societies, has proposed a revised classification. It was published in July, so it is not new this week. It is reported here because it affects diagnostic wording.
The current 2022 WHO classification relies almost entirely on morphology and defines several tumours, such as granulosa cell tumours, by resemblance to ovarian counterparts. The proposal is hierarchical: group (sex cords, stroma or both), category (phenotype, referenced to non-neoplastic ovarian and testicular elements), entity (shared clinicopathological or molecular features) and histological pattern (variations not linked to distinct behaviour).
The abstract describes a framework rather than outcome data. The WHO classification remains the current standard, and the proposal needs adoption before it changes reports.
- Keep reporting with the current WHO classification until your authority adopts a new one.
- Read the full proposal to see how entities map onto current terms before MDT discussion.
- Consider molecular testing where the proposal separates entities on molecular features.
- Document the histological pattern separately from the entity.
Why it matters
Terms borrowed from ovarian pathology may not behave the same way in the testis.
Don't overread it
A group proposal; the abstract gives no outcome data, and it has not replaced the WHO classification.
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