Subungual arteriovenous hemangioma mimicking subungual malignant tumor

Hatori, Yuka; Kawakita, Haruka; Ito, Makoto; Kobayashi, Kazuo; Fujisawa, Yasuhiro

doi:10.1111/1346-8138.16263

Cited by 1 publication

(2 citation statements)

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“…It is an acquired hemangioma, proposed to arise from the subpapillary vascular plexus, and represents a type of AV shunt [10]. Trauma, inflammation, and irritation have previously been identified as predisposing factors [9]. Only 2 previous cases of AVH involving the nail unit have been documented, presenting as a blue or red discoloration of the nail plate [8, 9].…”

Section: Discussionmentioning

confidence: 99%

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Nail Unit Arteriovenous Hemangioma Presenting as Longitudinal Erythronychia

Hwang¹,

Magro²,

Lipner³

2023

Skin Appendage Disord

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Introduction: Localized longitudinal erythronychia is defined as a single nail with a longitudinal red band extending the length of a nail plate. It has a broad differential of benign and malignant etiologies, and is rarely due to benign vascular proliferations. Case Presentation: We present a unique case of nail unit arteriovenous hemangioma presenting as longitudinal erythronychia of the left thumbnail in a 76-year-old male. The band was 6 mm and encompassed over 40% of the surface area of the nail plate. Dermoscopy showed red bands that were regular in terms of color, but not thickness or spacing. Due to concern for an amelanotic melanoma, a longitudinal excision was performed. Histopathology was consistent with a diagnosis of nail unit arteriovenous hemangioma. Conclusion: Arteriovenous hemangiomas were rarely present in the nail unit. They can be present as a blue or red nodule/macule, or as longitudinal erythronychia. Diagnosis often requires an excisional biopsy, with histopathology notable for a proliferation of multiple thick- and thin-walled vascular structures lined by a flattened endothelium. Our case emphasizes the need to consider vascular proliferations, such as arteriovenous hemangioma, in the differential diagnosis of longitudinal erythronychia.

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Section: Discussionmentioning

confidence: 99%

“…Trauma, inflammation, and irritation have previously been identified as predisposing factors [9]. Only 2 previous cases of AVH involving the nail unit have been documented, presenting as a blue or red discoloration of the nail plate [8, 9].…”

Section: Discussionmentioning

confidence: 99%