| Table 9-2 Vascular Patterns |
| | Feature | | Description | | Associated with |
| | Erythema | | Diffuse ill-defined pink-red area | | Irritated lesions, dysplastic nevi, melanoma |
| | Milky red areas | | Red area with milky ground glass appearance | | Amelanotic or hypomelanotic melanoma |
| | Various pink shades | | More than one shade of pink within lesion | | Amelanotic or hypomelanotic melanoma |
| | Telangiectasias | | Can appear dilated and linear | | BCCs (often arborizing), amelanotic melanoma (especially if central position) |
| | Pinpoint vessels | | Dot-like vessels | | Melanocytic lesions (nevi and melanoma) |
| | Glomerular vessels | | Vessels resembling capillaries of renal glomerulus | | Bowen’s disease, psoriasis, clear cell acanthoma |
| | Comma vessels | | Comma-shaped vessels | | Nevi (dermal and congenital), rarely amelanotic melanoma |
| | Linear irregular vessels | | Irregular-shaped wave-like vessels | | Melanoma (especially if in combination with dotted vessels) |
| | Hair pin vessels | | Twisted loop appearance | | Seborrheic keratosis, keratoacanthoma, squamous cell carcinoma |
| | Crown vessels | | Bending, orderly vessels which disappear in center of lesion | | Sebaceous hyperplasia |
| | Corkscrew vessels | | Winding vessels with corkscrew appearance | | Melanoma (cutaneous metastasis) |
| | Red-blue lacuna | | Well-defined ovoid red, red-blue, or black structures | | Hemangiomas, angiokeratoma, or thrombosed hemangioma (if black structures) |
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