case_images: PMC10800690_01
case_images: A: Well-defined macules and papules extending from the left infra-mammary area, the lower left side of the abdomen.. B: Well-defined macules and papules over the left inner thigh reaching the left mid-calf area.. C: lesions showing Blaschko's lines.
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case_images: One month after radiotherapy, dermatological examination showed multiple hyperpigmented, well-defined macules and papules in a whorled and linear fashion extending from the left infra-mammary area, the lower left side of the abdomen (as shown in Fig. 1) over the left inner thigh reaching the left mid-calf area as shown in Fig. 1B. It was found to follow Blaschko's lines (Fig. 1C), and so she was diagnosed with Zosteriform Lichen Planus induced by chemotherapy.
case_images: Histopathological appearance of Lichen Planus.
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case_images: As shown in Fig. 2, the epidermis showed hyperkeratosis, wedge-shaped hypergranulosis, and vascular alteration of the basal layer, with a moderate degree of lymphocytic infiltrate seen at the dermo-epidermal junction with pigment incontinence confirming Lichen Planus.
case_images: Improvement in patient condition post 9 week follow up.
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case_images: Subsequently, the patient's condition exhibited marked improvement (Fig. 3).