The recognition of vascular structuresThis glossary term has not yet been described. under dermoscopyThe examination of [skin lesions] with a 'dermatoscope'. This traditionally consists of a magnifier (typically x10), a non-polarised light source, a transparent plate and a liquid medium between the instrument and the skin, and allows inspection of skin lesions unobstructed by skin surface reflections. Modern dermatoscopes dispense with the use of liquid medium and instead use polarised light to cancel out skin surface reflections. has become increasingly important for a range of diagnoses. The identification of specific vascular characteristics is an important element of the two-step dermoscopic algorithmIn mathematics and computer science, an algorithm (Listeni/ˈælɡərɪðəm/ AL-gə-ri-dhəm) is a self-contained sequence of actions to be performed. Algorithms can perform calculation, data processing and automated reasoning tasks.. When the lesion is categorized as a nonmelanocyticThis glossary term has not yet been described. lesion, vascular features can helpRefers to giving assistance or support to others for mutual benefit to diagnose the lesion more specifically, and hence guide managementThis glossary term has not yet been described. (Level 5 of the revised two-step dermoscopic algorithm). If the lesion is clearly recognized as a melanocyticThis glossary term has not yet been described. tumorThis glossary term has not yet been described., then the identification of vessel type and distribution may facilitate the differentiation between benign and malignant diagnoses (Level 6 of the revised two-step dermoscopic algorithm). For more ambiguous cases in which the lesion cannot be easily classified as melanocytic or nonmelanocytic, the clinician may need to rely on vascular structures as the only recognizable features that can assist in the diagnosisis the identification of the nature and cause of a certain phenomenon. Diagnosis is used in many different disciplines with variations in the use of logic, analytics, and experience to determine "cause and effect". In systems engineering and computer science, it is typically used to determine the causes of symptoms, mitigations, and solutions.
In conclusion, it has become apparent that a finite number of morphologically distinct blood vesselsare the part of the circulatory system, and microcirculation, that transports blood throughout the human bodyThis glossary term has not yet been described. can be visualized under dermoscopy. The vessel morphologyThis glossary term has not yet been described. and distribution along with other accompanying features can assist the clinician in correctly identifying many benign and malignant lesions. In general, vesselsThis glossary term has not yet been described. in melanocytic lesions include dotted vesselstiny pinpoint vessels, comma vesselslinear curved short vessels dermal nevi, linear irregularlinear vessels with multiple bends vessels/serpentine vesselslinear irregular vessels with multiple bends. Seen with flat BCC and melanoma, milky red globulesThis glossary term has not yet been described., vascular blush, and polymorphous vesselsmultiple types of vessels are present may indicate malignancy in appropriate context for example in flat melanocytic lesions. VesselsThis glossary term has not yet been described. suggestive of nonmelanocytic lesions include arborizing vesselsanalytic term is branched vessels; Bright red sharply in focus large or thick diameter vessels dividing into smaller vessels; BCC, hairpin vessels, glomerular vesselsThis glossary term has not yet been described., crown vesselsRadial serpentine or arborizing vessels at the periphery of the lesion that radiate towards the center but do not cross the midline of the lesion. sebaceous hyperplasia, and dotted vessels in a string of pearlsCoiled or dotted vessels arranged in lines clear cell acanthoma pattern.