case_images: PMC10620550_01
case_images: Photograph of skin lesion pre-shave biopsy. Solitary, firm, and well-circumscribed nodule with variable pigmentation on the patient's right upper posterior shoulder.
case_images: cde-2023-0015-0001-531052_F02.jpg
case_images: PMC10620550_01_cde-2023-0015-0001-531052_F02.jpg
case_images: F2
case_images: On physical exam, a 5-mm diameter, light brown, irregular but well-circumscribed lesion was observed on the right posterior shoulder (Fig. 2).
case_images: a H&E stain, x20. Fusiform, nodular adnexal neoplasm emanating from the epidermis, with dermal and subcutaneous extension. b H&E x100. Well-circumscribed lobules of PH. c H&E x200. Bland round poroid cells (arrow) within a hyalinized vessel-rich stroma (star).
case_images: cde-2023-0015-0001-531052_F03.jpg
case_images: PMC10620550_01_cde-2023-0015-0001-531052_F03.jpg
case_images: F3
case_images: The tumor did not display significant nuclear pleomorphism, significantly elevated mitotic rate or infiltrative growth pattern (Fig. 3 and 4).
case_images: H&E stain, x400. Focally increased mitotic rate but no cytologic atypia.
case_images: cde-2023-0015-0001-531052_F04.jpg
case_images: PMC10620550_01_cde-2023-0015-0001-531052_F04.jpg
case_images: F4
case_images: The tumor did not display significant nuclear pleomorphism, significantly elevated mitotic rate or infiltrative growth pattern (Fig. 3 and 4).