Evaluation of the umbilical sparing phenomenon of large congenital melanocytic nevi in a large case series

Baykal, Can

doi:10.1111/ddg.13292

J Deutsche Derma Gesell

2017

DOI: 10.1111/ddg.13292

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Evaluation of the umbilical sparing phenomenon of large congenital melanocytic nevi in a large case series

Can Baykal

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2022

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“…following year, Baykal re-evaluated 18 of his 99 patients with abdominal LCMN and the umbilical area was found to be spared in 10 individuals. 8 We performed a retrospective study reviewing photographic records of 114 patients with LCMN and GCMN over a 21-year period at a single centre in Brazil. Eight patients (7.0%) presented with involvement of the breast area by the nevus, and Bork-Baykal phenomenon was complete in five of these patients (Table 1).…”

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The Bork‐Baykal phenomenon and umbilical sparing in large and giant congenital melanocytic nevus: A 21‐case series

Fernandes

Happle

Gontijo

et al. 2022

Acad Dermatol Venereol

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Dear Editor, Congenital melanocytic nevi (CMN) are benign proliferations present at birth. Lesions with an adulthood diameter perspective between 20 and 40 cm are classified as large CMN (LCMN) and those larger than 40 cm are classified as giant CMN (GCMN). 1 Lesions favour the proximal thighs ('bathing trunk'), breast/belly, back, body extremity, neck ('bolero'), almost hole body ('body'), head ('bonce') and acral ('biker-glove'). [1][2][3][4] The Bork-Baykal phenomenon was defined as the tendency of a LCMN and GCMN affecting the breast region to spare the nipple-areola complex. 5,6 Clinically, an island of healthy and normochromic skin is observed, surrounded by the LCMN lesion. This peculiarity was described in 2015 by Baykal et al. 5 in eight children with LCMN in the breast region. In 2017, Happle 6 argued that the same phenomenon had previously been described by Konrad Bork in a 1995 German textbook, and coined the term Bork-Baykal phenomenon.Sparing of the umbilical area in children with GCMN involving the abdominal region was first reported by Happle and Salhi in 2016 in two children. 7 This phenomenon in the navel area could be present partially (incomplete sparing), totally (complete sparing) or even absent (no sparing). In the

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confidence: 99%

The Bork‐Baykal phenomenon and umbilical sparing in large and giant congenital melanocytic nevus: A 21‐case series

Fernandes

Happle

Gontijo

et al. 2022

Acad Dermatol Venereol

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Evaluation of the umbilical sparing phenomenon of large congenital melanocytic nevi in a large case series

Cited by 1 publication

References 8 publications

The Bork‐Baykal phenomenon and umbilical sparing in large and giant congenital melanocytic nevus: A 21‐case series

The Bork‐Baykal phenomenon and umbilical sparing in large and giant congenital melanocytic nevus: A 21‐case series

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