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Research Article | Volume 19 Issue1 (Jan-Mar 2026, 2026) | Pages 48 - 51
Unmasking a Facial Papule: Clinical Challenges in Cutaneous Schwannoma Diagnosis
 ,
 ,
 ,
1
The Royal Wolverhampton NHS Trust,
2
The Dudley Group NHS Foundation Trust,
3
The Dudley Group NHS Foundation Trust
Under a Creative Commons license
Open Access
Received
Feb. 5, 2026
Revised
Feb. 20, 2026
Accepted
Feb. 28, 2026
Published
March 5, 2026
Abstract

Cutaneous schwannomas are uncommon benign peripheral nerve sheath tumours arising from differentiated Schwann cells and account for less than 5% of all schwannomas. They typically present as slow-growing, asymptomatic nodules with nonspecific clinical features, making histopathological examination essential for diagnosis. We report the case of a 33-year-old woman who presented with a 12-month history of an enlarging, intermittently pruritic and mildly tender 4 × 4 mm shiny papule on the right cheek. Dermoscopy demonstrated radial telangiectatic vessels without pigmentation. Clinical differentials included an adnexal tumour and compound naevus. The lesion was excised, and histology revealed a partly circumscribed multinodular dermal spindle cell lesion with variable cellularity and bland spindle cells arranged in fascicles with palisading. No atypia or increased mitotic activity were identified. Immunohistochemistry demonstrated diffuse S100 positivity with negative desmin and smooth muscle actin staining, consistent with a benign schwannoma. The excision site healed well with no recurrence at follow-up. This case highlights the diagnostic challenge posed by small facial papules due to their variable and nonspecific presentation. Accurate diagnosis relies on clinicopathological correlation, with histology and immunohistochemistry playing a central role. Cutaneous schwannoma should be considered in the differential diagnosis of solitary facial lesions to ensure appropriate management and reassurance.

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