Many chronic injuries related to athletic bicycling are now recognised: cyclist's nipples,1 neuropathic syndromes,2 and skin problems caused by the saddle. We have seen a new clinical problem in female high level cycling competitors: bicyclist's vulva (figure).
Participants, methods, and results
Six women, aged 21-38 years, had a unilateral chronic swelling of the labium majus after a few years of intensive bicycling (an average of 462.5 km per week). All six had typical unilateral lymphoedema (five on the right side, one on the left) which was more severe after more intense and longer training. The position of the bicycle saddle, the type of shorts worn, and the women's perineal hygiene were optimum. There was no family history of lymphoedema in any of the women, nor any common factor that might explain the lymphoedema.
All six women regularly had inflammatory skin problems related to the saddle and five had scars and perineal lesions such as chafing, perineal folliculitis, and nodules. Further clinical and ultrasound examination showed no pelvic anomaly.
Three of the cyclists (aged 27, 21, and 21 years) underwent three phase lymphoscintigraphy of their legs.3 We found similar lymphatic anomalies in all three. One had bilateral intra-abdominal abnormalities at the level of the iliac nodes and functional insufficiency of the superficial lymphatic system on the left side, the same side as the oedematous labium majus. In the other two, who presented with oedema of the right labium majus, lymphoscintigrams showed decreased uptake at the height of the right lumboaortic nodes. One of these two also had some inguinal nodes in the right groin. A previous study found no lymphatic abnormalities in the general population.3
Two women (aged 23 and 38 years) refused lymphoscintigraphy for personal reasons. The fifth woman (aged 34 years) was not offered the procedure owing to a history of pelvic surgery for endofibrosis of the external iliac artery, a syndrome seen in high level competition cyclists.4 In this patient, unilateral lymphoedema of the vulva was present before vascular surgery and resolved only partially after the vascular intervention. None of the other five cyclists presented symptoms of this vascular compression syndrome.
Comment
Cyclists with unilateral chronic swelling of the labium majus had similar lymphoscintigraphic abnormalities in their pelvis and homolateral leg.
Vulvar lymphoedema may be caused by a combination of chronic inflammation in the vulvoperineal area—very common in competitive cyclists—with damage to lymphatic vessels and repeated compression of the inguinal lymphatic vessels due to the curved posture of the cyclists. Both of these factors could contribute to alterations in lymphatic circulation in the vulvoperineal area. The abnormalities seen by lymphoscintigraphy might ultimately lead to more generalised lymphoedema of the legs.
We have yet to conduct prospective lymphoscintigraphic studies in a random sample of competitive cyclists. It is possible, in these women, that lymphatic disease existed before (latent lymphoedema) but was exposed by their intensive bicycling. The lymph nodes can be abnormal in lymphoedema praecox (affecting patients 2 to 35 years old) and tarda (affecting patients older than 35 years old).
In addition to standard measures for preventing saddle lesions,2 we recommend thorough care of any lesion of the vulvoperineal region. Elevation of the lower limbs during rest periods contributes to a better lymph drainage of the perineum and pelvis. Oedema may be reduced by applying cold compresses on the vulvoperineal region after training and by physiotherapy that stimulates alternative lymph drainage pathways.5
Figure.
Bicyclist's vulva
Acknowledgments
We thank Monique Van Noten for secretarial assistance.
Footnotes
Funding: No additional funding.
Competing interests: None declared.
References
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