Lacunae

From dermoscopedia
This page is not or not yet officially part of dermoscopedia.
5.00
(1 vote)
Annotations
Description In this chapter we describe lacunae and its histopathological correlation
Author(s) Ralph Braun · Katrin Kerl
Responsible author Ralph Braun→ send e-mail
Status unknown
Status update May 27, 2017
Status by Ralph Braun


Lacunae are multiple well-demarcated round/oval and reddish structures arranged in clusters, separated by a white rim called septae. Histologically, they correspond to dilated, thin-walled vessels in the papillary dermis. Lacunae are the hallmark of vascular tumors, mainly angiomas. Dark (violaceous, blue-black, or black) lacunae reveal partially or completely thrombosed dermal vessels located deeper in the dermis, which are very specific of solitary angiokeratomas [1]. In targetoid hemosiderotic angiokeratomas a central dark lacunae is surrounded by a peripheral red-brownish homogeneous area. Histopathologically, it reveals the presence of less dilated angulated vascular spaces, hemosiderin deposition and extravasated erythrocytes in the mid and deep dermis [2]

Lacunae 27.jpg
Lacunae.jpg



References
  1. Zaballos et al.: Dermoscopy of solitary angiokeratomas: a morphological study. Arch Dermatol 2007;143:318-25. PMID: 17372096. DOI.
  2. Zaballos et al.: Dermoscopy of Targetoid Hemosiderotic Hemangioma: A Morphological Study of 35 Cases. Dermatology (Basel) 2015;231:339-44. PMID: 26458032. DOI.
Cookies help us deliver our services. By using our services, you agree to our use of cookies.