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Secondary Syphilis Presenting With an Interstitial Granuloma Annulare-Like Histopathologic Pattern: A Report of 2 Cases.
Am J Dermatopathol
February 2025
Bioptic Laboratory, Ltd, Pilsen, Czech Republic.
Syphilis, known as "the great mimicker," is caused by the spirochete Treponema pallidum and is characterized by a diverse array of clinical and histopathologic presentations. In secondary cutaneous syphilis, the most consistent morphological features include a superficial and deep perivascular infiltrate containing plasma cells, varying degrees of endothelial swelling, irregular acanthosis, elongation of rete ridges, a vacuolated pattern, and the presence of plasma cells. Although serologic tests are essential for definitive diagnosis, spirochetes can sometimes be directly identified in silver-stained tissue slides or through immunohistochemistry.
View Article and Find Full Text PDFLaser Treatment in Nail Disorders: A Comprehensive Review.
Indian Dermatol Online J
December 2024
Department of Clinical Research, CUTIS Academy of Cutaneous Sciences, Bengaluru, Karnataka, India.
Background: Laser therapy has emerged as an innovative approach for managing various nail conditions, offering precise targeting, minimal invasiveness, and favorable safety profiles. This review analyzes the literature on laser therapy for nail indications, encompassing onychomycosis, nail psoriasis, nail warts, ingrown toenails, onychodystrophy, nail pigmentation disorders, and nail tumors.
Methods: PubMed and Google Scholar databases were searched to identify articles on laser therapy using specific key terms related to nail conditions (e.
Multinucleate cell angiohistiocytoma: a case series and literature review.
Pol J Pathol
January 2025
Department of Dermatology, Medical University of Warsaw, Warsaw, Poland.
Multinucleate cell angiohistiocytoma (MCAH) is a rare benign cutaneous entity. It classically presents as slowly progressive erythematous to violaceous papules on the distal extremities of middle-aged or elderly women. The entity may clinically resemble granuloma annulare, lichen planus, and several cutaneous vascular proliferations.
View Article and Find Full Text PDFAge, Sex, and Anatomical Location Patterns in Cutaneous Pyogenic Granuloma Cases.
JAMA Dermatol
January 2025
Division of Dermatology, Departments of Medicine and Pediatrics, Washington University School of Medicine in St Louis, St Louis, Missouri.
Importance: Cutaneous pyogenic granulomas (PGs) are commonly encountered, benign, vascular tumors, in which epidemiologic factors have been variably reported, in part, due to sample size limitations and a focus on either adult or pediatric patients.
Objective: To assemble a large dataset of pathologically diagnosed PGs across the continuum of age and investigate patterns of PGs by demographic factors, including age, sex, and anatomical location.
Design, Setting, And Participants: This retrospective case series included case reports of patients with pathologically confirmed PGs of cutaneous origin reported between April 1, 2010, to March 31, 2020.
Analysis of the efficacy of Langhans giant cells in controlling cutaneous Mycobacterium marinum infections.
Int Immunopharmacol
January 2025
Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College. Electronic address:
Background: Cutaneous Mycobacterium marinum (M. marinum) infection can lead to the formation of infectious granulomas containing Langhans giant cells (LGCs). Due to concerns about prolonged antibiotic use and the development of drug resistance, its treatment poses challenges.
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