What physical feature may be present in a patient with Klinefelter syndrome?

Klinefelter syndrome is a genetic condition that occurs in males who have an extra X chromosome, typically manifesting as XXY rather than the usual XY. One of the most notable physical features associated with Klinefelter syndrome is gynaecomastia, which refers to the development of breast tissue in males. This occurs due to hormonal imbalances, particularly with increased estrogen levels relative to testosterone, and can be an identifying characteristic of the syndrome.

Gynaecomastia can vary in severity and may cause psychological distress or embarrassment for those affected. It is important for healthcare providers to recognize this condition, as it can have implications for managing not just the physical aspect but also the social and psychological impacts on the patient.

The other features mentioned, such as short stature, webbed neck, and low-set ears, are not specifically characteristic of Klinefelter syndrome. Short stature can occur in various genetic or health conditions but is not definitive for Klinefelter. Webbed neck is more commonly associated with Turner syndrome, which affects females. Low-set ears can be a feature of multiple syndromes and are not unique to Klinefelter syndrome.

Recognizing the hallmark features of Klinefelter syndrome, such as gynaecomastia