Cutaneous Actinomycosis of the Perineum in an Immunocompetent Man.
Journal
The American Journal of dermatopathology
ISSN: 1533-0311
Titre abrégé: Am J Dermatopathol
Pays: United States
ID NLM: 7911005
Informations de publication
Date de publication:
01 Apr 2022
01 Apr 2022
Historique:
pubmed:
3
11
2021
medline:
22
3
2022
entrez:
2
11
2021
Statut:
ppublish
Résumé
We present a case of primary cutaneous actinomycosis of unclear pathogenesis. A 30-year-old-man with no significant medical or surgical history presented to the emergency department with a 2-week history of a tender perineal mass. The patient denied trauma or perforating injury to the area. Examination of the area revealed an indurated, nonfluctuant, erythematous papulonodule located 2 cm from the anus. The lesion was unresponsive to oral and topical antibiotics and was therefore excised. The excision specimen revealed a dense mixed infiltrate partially filling the reticular dermis and extending into the subcutaneous fat. The infiltrate surrounded grains of basophilic material with an outer rim of eosinophilic radiating Splendore-Hoeppli material. Within the grains, filamentous bacteria were highlighted with Periodic acid-Schiff and Grocott's methenamine silver. The organisms were gram-positive and acid-fast negative. Given the clinical and histopathologic findings, actinomycosis was diagnosed. Two weeks later, the patient reported resolution of symptoms. The patient was lost to follow-up. This case highlights an unusual presentation of actinomycosis and the crucial role histopathology plays in diagnosis.
Identifiants
pubmed: 34726184
doi: 10.1097/DAD.0000000000002095
pii: 00000372-202204000-00007
doi:
Substances chimiques
Anti-Bacterial Agents
0
Types de publication
Case Reports
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
272-275Informations de copyright
Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.
Déclaration de conflit d'intérêts
The authors declare no conflicts of interest.
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