Venous lake
Lower lip venous lake; senile haemangioma of the lip; phlebectasia
Venous lake is a common benign vascular ectasia presenting as a soft, compressible, dark-blue to violaceous papule, typically on the lower lip vermilion (commonest site), face, ear or neck of an older adult. It develops from chronic sun damage and senescent vascular degeneration. Compressibility with diascopy (the lesion blanches under glass slide pressure) is the diagnostic clinical sign. Venous lake is frequently mistaken for melanoma in situ, blue naevus, mucocele, mucinous carcinoma or pyogenic granuloma. Cosmetic treatment with sclerotherapy, electrocautery, laser or excision is curative; no malignant potential.
Clinical features
- Soft, dome-shaped, compressible papule, 2–10 mm, dark blue to violaceous.
- Common sites — lower lip vermilion, face (particularly cheek, ear), neck of older adult.
- Median age 60+; substantial sun exposure history.
- Compressibility (diascopy — pressure with glass slide / clinician's finger / dermoscope) blanches the lesion — the diagnostic clinical sign.
- Often bleeds with minor trauma (shaving, lip-biting).
- Asymptomatic except for cosmetic concern and bleeding.
Dermoscopy
- Homogeneous dark-blue / dark red structureless area.
- Compression blanches the lesion (key feature).
- Lacks the pigment network, atypical vessels, blue-white veil of melanoma.
- Lacks the multiple shades, irregular borders or globules of pigmented BCC.
Differential
- Melanoma in situ / nodular melanoma — non-compressible, multiple shades, asymmetric. Biopsy if any doubt — particularly on the lip vermilion.
- Blue naevus — firmer, smaller, present from younger age, non-compressible.
- Pyogenic granuloma — friable, recent rapid growth, bleeding.
- Mucinous adenocarcinoma — firm, infiltrative, slow growth.
- Mucocele — younger patient, inner lip, after lip biting, non-compressible.
- Cherry angioma — bright red, smaller, on trunk and face.
Management
- Reassurance is sufficient for asymptomatic typical lesions in older patients.
- Cosmetic / bleeding-related treatment options:
- Pulsed-dye laser (PDL 585/595 nm) — well-tolerated, 1–3 sessions.
- Nd:YAG laser — particularly effective for deeper lesions.
- Sclerotherapy (intralesional polidocanol or sodium tetradecyl sulphate).
- Electrocautery / hyfrecation.
- Excisional biopsy if any diagnostic uncertainty.
- Counsel patients about photoprotection of lower lip — solar elastosis is the underlying contributor.
- Always biopsy a lower-lip pigmented or non-compressible lesion to exclude melanoma.
References
- Bekhor PS. Venous lake — long-pulsed Nd:YAG laser treatment. Dermatol Surg; 2006.
- Cohen JL. Venous lakes — pathophysiology and treatment options. Cutis; 2008.
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