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In page Lymphedema:

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Primary lymphedema may be congenital or may arise sporadically. Multiple syndromes are associated with primary lymphedema, including Turner syndrome, Milroy's disease, and Klippel–Trénaunay syndrome. In these syndromes it may occur as a result of absent or malformed lymph nodes or lymphatic channels. Lymphedema can be present at birth, develop at the onset of puberty (praecox), or not become apparent for many years into adulthood (tarda). In men, lower-limb primary lymphedema is most common, occurring in one or both legs. Some cases of lymphedema may be associated with other vascular abnormalities.[1][citation needed]