A white-bluish plaque with rapid growth after palpation

Lozano-Masdemont, Belén; Polimón-Olabarrieta, I.; Pérez-Tato, Berta; Diego-Hernández, Cristina

doi:10.5826/dpc.0804a19

Cited by 1 publication

(4 citation statements)

References 2 publications

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“…No pressure was used to avoid the collapse of the vessels in the lesions. The complete list of dermoscopic criteria based on the conclusions of the Third Consensus Conference of the International Dermoscopy Society (TCCIDS) 14 and the dermoscopic descriptions of HADFs made by various authors 1,[3][4][5][6][7][8][9][10][11]13 were evaluated by two of the contributing authors (PZ and MAS). According to TCCIDS, we include the structures shiny white blotches, strands and streaks in the unifying feature "shiny white structures" (SWS), and a "prominent homogeneous area" (PHA) was considered when this feature was involving at least 50% of the lesion surface.…”

Section: Ater I a L S A N D M Ethodsmentioning

confidence: 99%

“…The clinical diagnosis of the classical type of DF is usually straightforward, but atypical cases and variants can pose a diagnostic challenge. Haemosiderotic/aneurysmal DFs (HADF) are uncommon tumours, which are frequently unrecognized and misdiagnosed by clinicians 3–11 . They usually present as a solitary dark papule, plaque, or nodule, most commonly located on the lower limbs, which may be associated with pain and rapid growth due to spontaneous intralesional haemorrhage (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

“…As far as we know, apart from sporadic case reports and a short case series, it is the first time that dermoscopic diagnosis testing accuracy has been performed for HADFs. [3][4][5][6][7][8][9][10][11]13 The objectives of this study were to describe the dermoscopic characteristics of a large series of HADFs and to investigate the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPP) of dermoscopic structures and patterns associated with this challenging variant of DF.…”

Section: Introductionmentioning

confidence: 99%

“…Haemosiderotic/aneurysmal DFs (HADF) are uncommon tumours, which are frequently unrecognized and misdiagnosed by clinicians. [3][4][5][6][7][8][9][10][11] They usually present as a solitary dark papule, plaque, or nodule, most commonly located on the lower limbs, which may be associated with pain and rapid growth due to spontaneous intralesional haemorrhage (Figure 1). The clinical diagnosis of DF was made in only three of 17 aneurysmal dermatofibromas of Santa Cruz and Kyriakos'study 2 and three of 40 patients of Calonje and Fletcher's article.…”

Section: Introductionmentioning

confidence: 99%

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Dermoscopy of haemosiderotic/aneurysmal dermatofibroma: A morphological study of 110 cases

Zaballos

Álvarez‐Salafranca

Llambrich

et al. 2022

Acad Dermatol Venereol

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Background Haemosiderotic and aneurysmal dermatofibromas are uncommon and frequently misdiagnosed lesions, which can be considered as different histopathological stages of the same tumour. A dermoscopic diagnosis testing accuracy has not been performed for these tumours to date. Objectives To determine the diagnostic significance of dermoscopic structures and patterns associated with haemosiderotic/ aneurysmal dermatofibromas in a large series. Methods Dermoscopic images of histopathologically proven cases of 110 haemosiderotic/ aneurysmal dermatofibromas and 501 other tumours were collected. The frequency, sensitivity, specificity, positive predictive value and negative predictive value of the dermoscopic structures and patterns associated with these lesions were calculated. Results Haemosiderotic/ aneurysmal dermatofibromas are mostly symmetric lesions (86.5%), and a prominent homogeneous area was present in 100% of them. The presence of vascular structures was very common (86.4%), and dotted vessels were predominant (58.2%). Shiny white structures were seen in 85.5% of lesions, while a peripheral delicate pigment network was present in 69.1%. The most significant pattern was the one composed of a prominent homogeneous area and peripheral delicate pigment network, which showed a specificity of 100% with a relatively good sensitivity (69.1%). All the patterns containing a peripheral delicate pigment network showed very good specificities, positive predictive values and negative predictive values. Those patterns without a peripheral delicate pigment network showed the highest sensitivities, but they showed a significant overlap with other tumours, mainly with melanoma. Conclusions Dermoscopy is helpful in improving the diagnostic accuracy of haemosiderotic/ aneurysmal dermatofibromas. However, there is a considerable dermoscopic overlap between these tumours and melanoma, specifically when the peripheral delicate pigment network is absent.

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