Publications by authors named "Myeong Hyeon Yang"
Spark's nevus is a compound word composed of Spitz nevus and Clark's nevus. It is one of the combined melanocytic nevi which is more common in female and usually presents as a sharp circumscribed hyperpigmented macule on the lower extremities. On histopathologic findings, both cytologic features of Spitz nevus characterized as large spindle or epithelioid melanocytes containing large nuclei with abundant cytoplasm, and architecture of Clark's nevus characterized as elongation of rete ridges, bridging of the nests, concentric and lamellar fibrosis can be seen.
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- Low-dose methotrexate (MTX) is commonly used for various skin diseases but is not officially recommended for solitary or localized primary cutaneous anaplastic large cell lymphoma (PCALCL) in treatment guidelines.
- A study analyzed long-term outcomes of 7 Asian patients with solitary or localized PCALCL treated with low-dose MTX, revealing that 85.7% achieved complete response and 14.3% had partial remission.
- Despite some patients experiencing relapses during an average follow-up of 92.1 months, all participants remained alive without disease, suggesting MTX is an effective and safe option for treating this condition.
Background: Tsutsugamushi disease is an acute, febrile, infectious disease caused by . Several studies investigating the histopathologic findings of eschars in tsutsugamushi disease reported leukocytoclastic vasculitis and neutrophil infiltration as the major findings. However, these findings may result from secondary changes following tissue necrosis.
View Article and Find Full Text PDFDegos disease, also referred to as malignant atrophic papulosis, was first described in 1941 by Köhlmeier and was independently described by Degos in 1942. Degos disease is characterized by diffuse, papular skin eruptions with porcelain-white centers and slightly raised erythematous telangiectatic rims associated with bowel infarction. Although the etiology of Degos disease is unknown, autoimmune diseases, coagulation disorders, and vasculitis have all been considered as underlying pathogenic mechanisms.
View Article and Find Full Text PDFBackground: An epidermal cyst is a common keratin-filled epithelial-lined cyst. The treatment of choice for epidermal cysts is surgical excision. If the cyst becomes ruptured, incision and drainage with oral antibiotic therapy or intralesional steroid injection are required.
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- * The study involved 28 patients (14 with LA and 14 with NE) and utilized polarized dermoscopy to observe differences in the skin lesions between the two conditions.
- * Dermoscopic findings indicated that specific features, like "coppery orange coloration" and "red globules," were more common in LA, while "scales" and "yellow clods" appeared more in NE, highlighting dermoscopy's usefulness in accurately diagnosing these conditions.