case_images: PMC9297043_01
case_images: Clinical manifestation of GP. In the groin and scrotum, red macules and patches are seen, with well-defined borders, dry surfaces, and overlying desquamation.
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case_images: Dermatological examination revealed well-demarcated erythema in the scrotum and bilateral groin with central hyperpigmentation and peripheral dry skin, with a small number of bran-like scales (Figure 1).
case_images: The histopathological finding of GP. Histological changes are mainly located in the stratum corneum of the epidermis. It reveals hyperkeratosis, parakeratosis, numerous transparent keratin granules in the stratum corneum (H&E staining, x200).
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case_images: Mild perivascular lymphocyte-dominated infiltration (Figure 2).