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1.
Annals of Dermatology ; : S55-S58, 2023.
Article in English | WPRIM | ID: wpr-976640

ABSTRACT

Fixed drug eruption (FDE) is a well-defined hyperpigmented patch that recurs in a fixed location each time a particular drug is taken. Common causative agents of FDE are nonsteroidal anti-inflammatory drugs, non-narcotic analgesics, sedatives, anticonvulsants, sulfonamides, and tetracycline. We report a 33-year-old male who presented with a recurrent, localized, brownish-to-erythematous macule and papules on the peri-philtrum area two hours after taking valacyclovir. Three episodes of valacyclovir ingestion for treatment of Herpes simplex virus infection provoked a similar skin rash at the same site. Histopathology results showed vacuolar degeneration in the basal layer of the epidermis, pigmentary incontinence, and perivascular inflammatory cell infiltration in the papillary dermis. Although patch test and skin prick test showed negative responses to acyclovir and valacyclovir, an intradermal test showed a positive reaction only to valacyclovir. The oral provocation test to acyclovir and valacyclovir showed a positive reaction only to valacyclovir. Through drug history, histopathological examination, patch test, intradermal test, and oral provocation test, we established a final diagnosis of FDE due to valacyclovir without cross-reactivity to acyclovir. To find alternative therapeutic drugs, we suggest diagnostic tests with not only the suspected drugs, but also other drugs in the same class.

2.
Korean Journal of Dermatology ; : 265-268, 2020.
Article | WPRIM | ID: wpr-832748

ABSTRACT

Cutaneous Müllerian cyst (CMC) is a rare benign cystic lesion that typically occurs on the lower extremity of young females shortly after puberty. They have been widely regarded as Müllerian heterotopias due to the morphological similarities of the cyst lining cells to the epithelium of the fallopian tubes. A 16-year-old female presented with a two-year history of a solitary, subcutaneous mass involving the left ankle. She had no specific symptoms associated with the skin lesion. However, the lesion had been growing in size. Histopathological findings revealed cystic structures lined by pseudostratified ciliated cuboidal to columnar cells, accompanying intraluminal papillary projection. The immunohistochemical staining profiles, including positive staining for estrogen and progesterone receptors, were characteristic of the fallopian tube epithelium. After being surgically removed, the lesion was cured without recurrence. Based on her typical presentation and histopathological findings, we present this patient as a case of CMC.

3.
Korean Journal of Dermatology ; : 151-152, 2018.
Article in Korean | WPRIM | ID: wpr-738827

ABSTRACT

No abstract available.

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