Glomus Tumor of the Buttock

Idoudi, Safa; Arousse, A.; Boussofara, L.

doi:10.5826/dpc.0904a19

Cited by 6 publications

(8 citation statements)

References 2 publications

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“… 7 After an extensive literature search, the authors found only two dermoscopic descriptions of EGT. 4 , 8 In both, a homogeneous, unstructured purplish area surrounded by a whitish region is reported. 1 , 4 However, in the present case, in addition to the aforementioned classical findings, intensely purplish lagoons were also demonstrated, standing out individually from the pinkish area without structures and circumscribed by a pale halo ( Fig.…”

Section: Discussionmentioning

confidence: 97%

Extradigital glomus tumor: dermoscopic description and histopathological correlation

Garcia

Fernandes

Sobreira

et al. 2021

Anais Brasileiros de Dermatologia

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Glomus tumors are rare benign neoplasms arising from the neuromyoarterial structure called glomus body. They present as angiomatous papules, soft and painful, especially to cold and pressure. In general, they are solitary and affect the extremities, located mainly the subungual bed. Extradigital lesions are rare and can constitute a diagnostic challenge. This is the report of a patient with an extradigital lesion on the left arm, and its dermoscopic aspects, including angiomatous lagoons circumscribed by a pale halo, a structure not previously described in the two reports of extradigital glomus tumor with dermoscopic features, found in the literature.

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Section: Discussionmentioning

confidence: 97%

Extradigital glomus tumor: dermoscopic description and histopathological correlation

Garcia

Fernandes

Sobreira

et al. 2021

Anais Brasileiros de Dermatologia

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“…Accordingly, previous anecdotal descriptions of the dermoscopic features of EUGTs are mostly based on a combination of structureless purplish areas and hypopigmented homogeneous areas. 7,15,16,25 In this line, Oliveira proposed that the finding of purple and white colours in a painful lesion could be useful for the diagnosis of GTs in extraungual locations. 15 The most repeated vascular pattern in our series is characterized by scarce, scattered, and nonbranched linear unfocused vessels, which were observed in 74.4% of cases.…”

Section: Discussionmentioning

confidence: 99%

“…Regarding EUGTS, we have observed a structureless purplish‐white homogeneous area in 69.2% of cases, while pink to reddish‐white colour was predominant in 12.8%. Accordingly, previous anecdotal descriptions of the dermoscopic features of EUGTs are mostly based on a combination of structureless purplish areas and hypopigmented homogeneous areas 7,15,16,25 . In this line, Oliveira proposed that the finding of purple and white colours in a painful lesion could be useful for the diagnosis of GTs in extraungual locations 15 .…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, this non‐invasive technique can aid in diagnosing nail lesions, revealing subtle changes that are not visible to the naked eye or enhancing clinical findings, making them more evident 11–13 . However, current data regarding dermoscopy of GTs are limited and are mostly based on isolated reports and two relatively small case series 5,7,12,14–16 . The aim of this study was to analyse the dermoscopic features and patterns of a large series of SUGTs and EUGTs.…”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13] However, current data regarding dermoscopy of GTs are limited and are mostly based on isolated reports and two relatively small case series. 5,7,12,[14][15][16] The aim of this study was to analyse the dermoscopic features and patterns of a large series of SUGTs and EUGTs.…”

Section: Introductionmentioning

confidence: 99%

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Dermoscopy of glomus tumour: a cross‐sectional study of 86 cases

Álvarez‐Salafranca

Bañuls

Thomas

et al. 2022

Acad Dermatol Venereol

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Background Glomus tumours (GTs) are benign cutaneous neoplasms derived from the neuromyoarterial apparatus with a strong predilection for acral sites, especially the subungual space. Current data regarding dermoscopy of these lesions are very limited. Objectives To analyse the dermoscopic structures and patterns seen in a large series of subungual (SUGTs) and extraungual glomus tumours (EUGTs) and to determine their diagnostic significance. Methods Clinical and dermoscopic images of 86 histopathologically proven cases of GTs (47 SUGTs and 39 EUGTs) collected from 9 hospitals in Spain, France, Italy, and Brazil were evaluated for the presence of dermoscopic structures and patterns. Similarly, 189 and 185 dermoscopic images of other ungual tumours and other extraungual non‐pigmented tumours, respectively, were evaluated for the same structures and patterns. Finally, we evaluate diagnostic testing accuracy calculating sensitivity (S), specificity (Sp), and positive and negative predictive values of the different patterns for the diagnosis of GT. Results Regarding SUGTs, four patterns were built from the combination of different structures. The pattern composed of a structureless purplish/red subungual spot with or without vessels reached the highest S (S1, 78.8%). The combination of a structureless purplish/red subungual spot and longitudinal erythronychia (LE) (S2) is highly specific (96.3%). Patterns S3 (proximal purplish/red subungual spot, LE, and distal notch) and S4 (bed subungual spot and onycholysis) are the most specific and exclusive of matrix and bed tumours, respectively. The most consistent pattern in EUGTs is composed of a structureless purplish‐white to reddish‐white homogeneous area and linear unfocused vessels (E) (S: 61.5%, Sp: 95.7%). EUGTs did not show lacunae, unlike other vascular tumours. Conclusions Dermoscopy is helpful in improving the diagnostic accuracy of GTs, not only in SUGTs but also when these lesions arise out of the ungual apparatus.

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Glomus Tumor of the Buttock

Cited by 6 publications

References 2 publications

Extradigital glomus tumor: dermoscopic description and histopathological correlation

Extradigital glomus tumor: dermoscopic description and histopathological correlation

Dermoscopy of glomus tumour: a cross‐sectional study of 86 cases

Relationship between dermoscopic and histopathological findings of extradigital glomus tumors

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