Background
Venous lakes manifest as dark blue-to-violaceous compressible papules caused by dilation of venules. They were first described in 1956 by Bean and Walsh, who noted their compressibility and predilection for sun-exposed skin, especially the ears of elderly patients.[1] Although benign, venous lakes are important because of their mimicry of malignant lesions, such as melanoma and pigmented basal cell carcinoma.
Pathophysiology
A venous lake is an acquired form of vascular ectasia (vascular dilatation). A capillary aneurysm is considered a precursor or variant of a venous lake.
Epidemiology
Frequency
United States
The exact incidence of venous lakes is unknown but they are believed to be common.
International
The worldwide incidence of venous lakes is unknown but is believed to be the same as that in the United States.
Mortality/Morbidity
Mortality from venous lakes has not been reported. Venous lakes are usually asymptomatic, although pain, tenderness, and excessive bleeding may occur if a lesion is traumatized. Venous lakes are considered biologically harmless.
Race
No racial predilection has been documented for venous lakes.
Sex
Bean and Walsh reported that 95% of venous lakes were observed in males.[1] Another review of venous lakes confirmed the same sex distribution. The disproportionate male distribution may be related to occupational sun exposure, hair length, and hairstyles. Women comprised the majority of treated patients in a large study of laser therapy for venous lakes; however, this may be related to increased concern among women regarding cosmetic appearance rather than with true incidence.
Age
Venous lakes have been reported only in adults and usually occur in patients older than 50 years. The average age of presentation for venous lakes has been reported to be 65 years.
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Roncero M, Canueto J, Blanco S, Unamuno P, Boixeda P. Multiwavelength Laser Treatment of Venous Lakes. Dermatol Surg. Nov 3 2009;[Medline].
Bekhor PS. Long-pulsed Nd:YAG laser treatment of venous lakes: report of a series of 34 cases. Dermatol Surg. Sep 2006;32(9):1151-4. [Medline].
Jay H, Borek C. Treatment of a venous-lake angioma with intense pulsed light. Lancet. Jan 10 1998;351(9096):112. [Medline].
del Pozo J, Pena C, Garcia Silva J, Goday JJ, Fonseca E. Venous lakes: a report of 32 cases treated by carbon dioxide laser vaporization. Dermatol Surg. Mar 2003;29(3):308-10. [Medline].
Wall TL, Grassi AM, Avram MM. Clearance of multiple venous lakes with an 800-nm diode laser: a novel approach. Dermatol Surg. Jan 2007;33(1):100-3. [Medline].
Alcalay J, Sandbank M. The ultrastructure of cutaneous venous lakes. Int J Dermatol. Dec 1987;26(10):645-6. [Medline].
Goldberg LH, Altman AR. Venous lakes of the ears. Cutis. Dec 1985;36(6):472-5. [Medline].
Requena L, Sangueza OP. Cutaneous vascular anomalies. Part I. Hamartomas, malformations, and dilation of preexisting vessels. J Am Acad Dermatol. Oct 1997;37(4):523-49; quiz 549-52. [Medline].

