Sex cord-stromal tumor of testis

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Sex cord-stromal tumor of testis

ORPHA:363489Disease

Also called Testicular sex cord-stromal tumor

What it is

A group of rare tumors of testis comprising neoplasms of pure sex cord or pure stromal type, or neoplasms with admixtures of both components in various proportions and degree of differentiation. The tumors usually present as a painless testicular mass, although some may be associated with endocrine manifestations such as precocious puberty, gynecomastia, or erectile dysfunction. Malignant behavior is seen only in a small percentage of these tumors.

Key facts

Prevalence
1-9 / 1 000 000 (lifetime, Europe)
Age of onset
Adolescent, Adult
Inheritance
Not applicable
Classified as
Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

ICD-10 codes

D40.1ICD-10 uses a narrower term — shared with 1 other rare disease

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references

MONDO 0003125UMLS C3840076

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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