Terminology for vessel morphology and arrangement

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 Author(s): Ralph P. Braun, Harald Kittler

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Author(s)	Harald Kittler · Ralph P. Braun
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Status update	June 7, 2017
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Terminology, Blood vessels, Vascular structures, Morphology, Arrangement, Terminology (vessel morphology - vessel arrangement), Dermoscopy Terminology for vessel morphology and arrangement – cite! Terminology for vessel morphology and arrangement (message) Terminology for vessel morphology and arrangement – participate!

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Descriptive term	Metaphoric term	Definition	Significance†
Vessel morphology
dotted vessels		tiny pinpoint vessels	flat melanocytic lesions inflammatory diseases Bowen disease
clod vessels	red-purple lacunes	More or less sharply demarcated roundish or oval areas with a reddish red-bluish maroon or dark-red to black coloration separated from each other by intervening stroma without vessels inside the lacunae.	hemangioma
linear vessels		Linear mildly curved vessels considered irregular when different sizes shapes and curves with a haphazard or random distribution are presented and considered regular when short and fine (thin) linear vessels prevail	various diagnoses
coiled vessels	glomerular vessels	tightly coiled vessels resembling the glomerular apparatus of the kidney	Bowen disease
looped vessels	hairpin vessels	two parallel linear vessels forming a half looped or hairpin like structure	seborrheic keratosis viral warts
serpentine vessels	linear irregular vessels	linear vessels with multiple bends	flat BCC melanoma
helical vessels	corkscrew vessels	twisted looped vessels with bends twisted along a central axis	melanoma metastasis
curved vessels	comma vessels	linear curved short vessels	dermal nevi
monomorphous vessels		one type of vessel dominates	various diagnoses
polymorphous vessels		multiple types of vessels are present	may indicate malignancy in appropriate context for example in flat melanocytic lesions

Descriptive term	Metaphoric term	Definition	Significance†
Vessel arrangement
radial vessels	crown vessels	Radial serpentine or arborizing vessels at the periphery of the lesion that radiate towards the center but do not cross the midline od the lesion.	sebaceous hyperplasia
serpiginous vessels	string of perls	Coiled or dotted vessels arranged in lines	clear cell acanthoma
branched vessels	arborizing vessels	Bright red sharply in focus large or thick diameter vessels dividing into smaller vessels	BCC
clustered vessels		Coiled or glomerular vessels arranged in groups	Bowen disease
centered dots vessels	targetoid vessels	red dots (vessels) in the center of hypopigmented space between reticular lines	congenital melanocytic nevus

† Significance of vascular structures depend on the context and is generally weaker than for pigmented structures

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