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This article discusses the use of 3D biomodelling and surgical guides for the treatment of small subungual glomus tumors. A custom-made surgical guide was created using 3D technologies and MRI imaging to enhance preoperative planning and surgical precision. The use of 3D technologies, such as biomodelling and 3D printing, allowed for the accurate excision of the tumor with minimal disruption to the nail apparatus, reducing the risk of recurrence and post-surgical complications. The article also highlights the potential of 3D technologies in improving early detection, surgical management, and preoperative diagnosis of subungual glomus tumors. [Extracted from the article]

Background: Chronic paronychia is an inflammatory process of the nail folds lasting more than 6 weeks. Clinically, there is hypertrophy and retraction of the folds and absence of the cuticle. Treatment involves clinical measures and, when there is no response or the hypertrophy of the folds is very pronounced, surgical treatment is indicated. Post‐surgical histopathology is little studied in the literature. In this sense, we believe that the histopathological study is important not only for the individualized understanding of the patient's chronic disease, avoiding relapses, but also for the understanding of its pathophysiology and treatment possibilities. Objective: To describe the histopathological changes found in biopsies of the proximal nail fold of patients with chronic paronychia undergoing surgical treatment. Materials and Methods: A histopathological study of 16 nail folds from 6 patients after surgery was performed at 2 study centers. Results: The most prevalent epidermal findings were orthokeratosis, hypergranulosis, acanthosis and spongiosis and the dermal findings were fibrosis and mononuclear inflammatory infiltrate. Conclusion: The histopathological study allowed us to conclude that chronic paronychia is primarily an inflammatory process, but it is not possible to conclude whether microorganisms such as Candida and bacterial cocci are part of the etiology or just secondary and opportunistic agents. [ABSTRACT FROM AUTHOR]

Background: Severe nail lichen planus (NLP) does not respond well to treatment and is often poorly considered and described in detail. Objective: We sought to describe the characteristics of severe NLP. Methods: A retrospective data analysis was performed, including the photographic records of the most compromised nails of patients with NLP over 18 years old, who consulted between 2009 and 2019 at the Instituto de Dermatologia Professor Rubem David Azulay in Rio de Janeiro, Brazil. Descriptive and statistical analysis using Fisher's exact test was performed to verify the hypothesis of independence between characteristics (P < 0.05). Results: A total of 102 patients were included. Anonychia was associated with severe thinning of the nail plate, retraction of the nail bed or nail plate, residual nail plate, loss of proximal nail fold limits, and onychoatrophy. Dorsal pterygium was associated with loss of proximal nail fold limits, onychoatrophy, and distal splitting greater than 50%. Conclusion: We provide descriptions of the most severe signs in order to facilitate the clinical diagnosis when a biopsy is not feasible and suggest an update of current NLP classifications. [ABSTRACT FROM AUTHOR]

Competing Interests: Authors declare no conflict of interest.