case_images: PMC10352123_01
case_images: Clinical presentations: multiple erythematous to brownish spiny keratotic papules on the neck at the initial visit (A and B).
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case_images: Dermatological examination revealed multiple discrete brownish spiny keratotic papules and scaly erythematous papules on the neck (Figure 1A and B).
case_images: Histopathology: (A) mild epidermal hyperplasia with focal mound parakeratosis (hematoxylin-eosin, x100). (B) Higher magnification showed parakeratotic corneocytes with retained keratohyalin granules, which were more prominent around the eccrine ostia (hematoxylin-eosin, x400).
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case_images: These features were prominent in the stratum corneum of the eccrine ostia (Figure 2A and B).
case_images: Significant improvement of the lesions at the 2-week follow-up visit (A and B).
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case_images: At the 2-week follow-up visit, the lesions significantly improved (Figure 3A and B).