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Rodríguez-Cuadrado FJ, Nájera L, Suárez D, Silvestre G, García-Fresnadillo D, Roustan G, Sánchez-Vázquez L, Jo M, Santonja C, Garrido-Ruiz MC, Vicente-Montaña AM, Rodríguez-Peralto JL, Requena L. Clinical, histopathologic, immunohistochemical, and electron microscopic findings in cutaneous monkeypox: A multicenter retrospective case series in Spain. J Am Acad Dermatol 2023; 88:856-863. [PMID: 36581043 PMCID: PMC9794029 DOI: 10.1016/j.jaad.2022.12.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/22/2022] [Accepted: 12/16/2022] [Indexed: 12/27/2022]
Abstract
BACKGROUND The worldwide outbreak of monkeypox has evidenced the usefulness of the dermatologic manifestations for its diagnosis. OBJECTIVE To describe the histopathologic and immunohistochemical findings of monkeypox cutaneous lesions. METHODS This is a retrospective histopathologic and immunohistochemical study of 20 patients with positive Monkeypox virus DNA polymerase chain reaction and immunohistochemical positivity for Vaccinia virus in cutaneous lesions. Four cases were also examined by electron microscopy. RESULTS The most characteristic histopathologic findings consisted of full-thickness epidermal necrosis with hyperplasia and keratinocytic ballooning at the edges. In some cases, the outer root sheath of the hair follicle and the sebaceous gland epithelium were affected. Intraepithelial cytoplasmic inclusion bodies and scattered multinucleated keratinocytes were occasionally found. Immunohistochemically, strong positivity with anti-Vaccinia virus antibody was seen in the cytoplasm of ballooned keratinocytes. Electron microscopy study demonstrated numerous viral particles of monkeypox in affected keratinocytes. LIMITATIONS Small sample size. Electron microscopic study was only performed in 4 cases. CONCLUSION Epidermal necrosis and keratinocytic ballooning are the most constant histopathologic findings. Immunohistochemical positivity for Vaccinia virus was mostly detected in the cytoplasm of the ballooned keratinocytes. These findings support the usefulness of histopathologic and immunohistochemical studies of cutaneous lesions for diagnosis of monkeypox.
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Affiliation(s)
| | - Laura Nájera
- Department of Pathology, Hospital Universitario Puerta de Hierro Majadahonda, Universidad Autónoma, Madrid, Spain
| | - Dolores Suárez
- Department of Pathology, Hospital Universitario Puerta de Hierro Majadahonda, Universidad Autónoma, Madrid, Spain
| | - Gala Silvestre
- Department of Pathology, Hospital Universitario Puerta de Hierro Majadahonda, Universidad Autónoma, Madrid, Spain
| | - Diego García-Fresnadillo
- Department of Pathology, Hospital Universitario Puerta de Hierro Majadahonda, Universidad Autónoma, Madrid, Spain
| | - Gaston Roustan
- Department of Dermatology, Hospital Universitario Puerta de Hierro Majadahonda, Universidad Autónoma, Madrid, Spain
| | - Laura Sánchez-Vázquez
- Department of Pathology, Hospital Universitario Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
| | - Margarita Jo
- Department of Pathology, Hospital Universitario Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
| | - Carlos Santonja
- Department of Pathology, Hospital Universitario Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
| | | | | | | | - Luis Requena
- Department of Dermatology, Hospital Universitario Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
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Roguera Sopena M, Naqui Xicota L, Hernández Rodríguez Á, Méndez Hernández MJ, Rodrigo Gonzalo de Liria C. Monkeypox, also in pediatric age. An Pediatr (Barc) 2022; 97:426-427. [PMID: 36266187 PMCID: PMC9575404 DOI: 10.1016/j.anpede.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 09/12/2022] [Indexed: 11/06/2022] Open
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Roguera Sopena M, Naqui Xicota L, Hernández Rodríguez Á, Méndez Hernández MJ, Gonzalo de Liria CR. Viruela del mono, también en la edad pediátrica. An Pediatr (Barc) 2022. [DOI: 10.1016/j.anpedi.2022.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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