Venous lake

Venous lake
Diagnosis in short
LM DDx	angiokeratoma, cherry hemangioma
Gross	classical lip
Signs	dark purple spot, blanches with pressure
Prevalence	common
Prognosis	benign

Venous lake is a benign skin lesion.

General

• Dilated vein.

Clinical:

• Blanches with pressure.

Gross

• Purple/blue spot.

Microscopic

Features:

• Lined by endothelium.
• Blood in lumen.
• +/-Fibrin in lumen.
• +/-Solar elastosis - very common.

DDx:

• Angiokeratoma.
  • Ectatic superficial dermal vessels.
  • Irregular acanthosis.
  • Longer rete ridges.
• Cherry hemangioma.

Sign out

Left Lower Lip Lesion, Excision:
     - Benign subcutaneous tissue with venous lake.
     - NEGATIVE for malignancy.

Block letters

SKIN LESION, RIGHT CHEEK, BIOPSY:
- VENOUS LAKE.
- SOLAR ELASTOSIS.
- NEGATIVE FOR NEVUS.

Micro

The sections show subcutaneous tissue with dilated vascular spaces. No significant atypia is seen. No overlying skin is present.

See also

• Dermal cysts.