sQuiz your knowledge: a recurrent annular erythema
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uiz your knowledge: a recurrent annular erythema Li-wen ZHANG1,a , Yan LIU1,a , Dong-xian LIU2 1
Department of Dermatovenereology, Chengdu Second People’s Hospital, Chengdu, Sichuan, China 2 Department of Dermatovenereology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China a These authors contributed equally. [email protected] [email protected]
A 24-year-old man presented with a one-year history of recurrent itchy annular erythematous lesion on the back. Two weeks ago, the lesion began to appear as a single erythematous lesion with some papules, which then expanded centrifugally. An annulus with hyperpigmentation then developed in the centre (figure 1A). The ring of the annular lesion was composed of papules and erythema (figure 1B). The same lesion had appeared over the same site one year earlier, resolving spontaneously within a month. The fungal microscopy was negative. A skin biopsy was taken from the peripheral erythema, and papules and histopathological results showed a sparse perivascular lymphocytic infiltration in the superficial dermis (figure 1C).
References What is your diagnosis? 1. Moreno-Arrones OM, Jimenez N, Alegre-Sanchez A, et al. Glomuvenous malformations: dual PDL-Nd:YAG laser approach. Lasers Med Sci 2018; 3: 2007. 2. Baselga E. Vascular malformations. In: Dermatology. 4th Ed. Bolognia J, Schaffer J, Cerroni L. Philadelphia: Elsevier Saunders. 3. Boon LM, Mulliken JB, Enjolras O, Vikkula M. Glomuvenous malformation (glomangioma) and venous malformation: distinct clinicopathologic and genetic entities. Arch Dermatol 2004; 140: 971-6. doi:10.1684/ejd.2020.3824
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Figure 1. A) An annular erythematous lesion with hyperpigmentation in the centre. B) The ring of the annular lesion is composed of papules and erythema. C) Histopathological examination shows a sparse perivascular lymphocytic infiltration in the superficial dermis (haematoxylin and eosin staining; ×100 magnification).
EJD, vol. 30, n◦ 4, July-August 2020
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Erythema papulatum centrifugum Erythema papulatum centrifugum (EPC), also called erythema papulosa semicircularis recidivans, is characterized by single or multiple recurrent annular or semiannular erythematous lesions with central regression, surrounded by tiny red papules. The lesions commonly appear in the spring or summer and regress in the autumn or winter. EPC may be a new entity that is distinct from eczema, erythema annulare centrifugum and other well-described figurate erythemas characterized by annular erythematous lesions [1, 2]. EPC may be a sweating-related dermatitis. The diagnostic criteria for EPC include: (1) a single or multiple recurrent expanding annular or semiannular erythematous lesions with central regression and some surrounding tiny red papules; (2) lesions that generally relapse yearly, and spontaneously resolve without any trace; (3) the histopathological feature of superficial perivascular inflammation with or without mild inflammation around sweat glands in the middle dermis; and (4)
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