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김병수 ( Byeong Su Kim ),김연웅 ( Yeon Woong Kim ),최진화 ( Jin Hwa Choi ),송승현 ( Seung Hyun Sohng ),신동훈 ( Dong Hoon Shin ),최종수 ( Jong Soo Choi ) 영남대학교 의과대학 2015 Yeungnam University Journal of Medicine Vol.32 No.2
Clear cell acanthoma (CCA) is an asymptomatic benign lesion of unknown origin that typically appears as a brownish, dome-shaped papule on the leg. It has an unusual clinical feature in that it appears as chronic eczema, Bowen disease, or Paget disease on the areola. Its histopathologic findings are well-demarcated psoriasiform acanthosis with pale keratinocytes (clear cells) that are rich in intracellular glycogen, which stain positively with Periodic acid-Shiff. We report herein on a young female patient with CCA on the areolar areas.
Case Report : Infantile Perianal Pyramidal Protrusion
최진화 ( Jin Hwa Choi ),김연웅 ( Yeon Woong Kim ),김병수 ( Byeong Su Kim ),송승현 ( Seung Hyun Sohng ),신동훈 ( Dong Hoon Shin ),최종수 ( Jong Soo Choi ),배영경 ( Young Kyung Bae ) 대한피부과학회 2015 大韓皮膚科學會誌 Vol.53 No.6
A 2-year-old girl presented with a month history of a tender, erythematous pyramidal protrusion on the perineum, anterior to the anus. She had suffered painful defecation due to the protrusion, but had no history of constipation. The family history was negative, and physical examination showed no evidence of associated anal fissuring or skin atrophy. Histological examination revealed epidermal hyperplasia, dermal edema, and hemorrhage with inflammatory cell infiltration. The patient was treated with a CO2 laser to relieve painful defecation. Infantile perianal pyramidal protrusion (IPPP) is characterized by a solitary protrusion observed in the perineal and perianal area. Since IPPP is predominantly observed in female children in the perineal area, it can be misdiagnosed as sexual abuse, anogenital warts, or hemorrhoids. The disease is generally benign and may resolve spontaneously, with the exception of the lichen sclerosus-associated type. Physicians should be aware of IPPP to make an accurate diagnosis. (Korean J Dermatol 2015;53(6):470∼472)
최진화 ( Jin Hwa Choi ),김병수 ( Byeong Su Kim ),송승현 ( Seung Hyun Sohng ),신동훈 ( Dong Hoon Shin ),최종수 ( Jong Soo Choi ),배영경 ( Young Kyung Bae ) 대한피부과학회 2014 대한피부과학회지 Vol.52 No.7
Intralymphatic histiocytosis (ILH) is a rare, chronic cutaneous condition characterized by the presence of dilated lymphatic vessels containing aggregates of mononuclear histiocytes within lumina. ILH presents with asymptomatic and poorly demarcated, erythematous plaques or livedo reticularis-like lesions, usually located on the extremities. ILH is often associated with rheumatoid arthritis, metal joint implants, and mastectomy scars of breast cancer patients, but its pathogenesis remains uncertain. A 69-year-old woman with osteoarthritis, who had a past history of cancer in the left breast, presented with asymptomatic, linear-shaped, scar-like erythematous plaques on the right elbow for a month. Approximately a month before her visit, she had been treated with an intraarticular corticosteroid injection on the right elbow in a local clinic. Histopathologic findings showed irregularly dilated vessels with intraluminal cells in the superficial and deep dermis. In double immunohistochemical staining with CD68/D2-40, endothelial cells lining the vessels were positive for D2-40 staining, which is a marker for lymphatic endothelial cells, and intraluminal cells were positive for CD68 staining, which is a marker for histiocytes. We present the findings of a patient with a rare condition of intralymphatic histiocytosis with scar-like morphology of the plaques. (Korean J Dermatol 2014;52(7):490∼493)
소아에서 퇴형성 대형세포 림프종 후 발생한 림프종양 구진증
최진화 ( Jin Hwa Choi ),김연웅 ( Yeon Woong Kim ),김병수 ( Byeong Su Kim ),송승현 ( Seung Hyun Sohng ),신동훈 ( Dong Hoon Shin ),최종수 ( Jong Soo Choi ),배영경 ( Young Kyung Bae ) 대한피부과학회 2015 대한피부과학회지 Vol.53 No.8
Patients with lymphomatoid papulosis have an increased risk (approx. 5% to 20%) of developing a malignant lymphoma such as mycosis fungoides, anaplastic large cell lymphoma (ALCL) and Hodgkin``s disease before, during,or after lymphomatoid papulosis occurs. However, it is very rare that lymphomatoid papulosis occurs after ALCL, especially in childhood. An 11-year-old boy who had been diagnosed with ALCL 3 years prior and treated with chemotherapy and peripheral blood stem cell transplantation developed multiple scaly papules on his trunk and both extremities. Histopathologic and immunohistochemical examination of the scaly papules revealed lymphomatoid papulosis. The patient was cured with narrow band UVB treatment and there has been no relapse in lesions 10 years later. We report a case of lymphomatoid papulosis following allogenic stem cell transplantation for ALCL. (Korean J Dermatol 2015;53(8):638∼642)
소아에서 발생한 Blastic Plasmacytoid Dendritic Cell Neoplasm 및 고찰
최진화 ( Jin Hwa Choi ),김병수 ( Byeong Su Kim ),송승현 ( Seung Hyun Sohng ),신동훈 ( Dong Hoon Shin ),최종수 ( Jong Soo Choi ) 대한피부과학회 2013 대한피부과학회지 Vol.51 No.12
Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is a rare and highly aggressive hematopoietic malignancy which is derived from the precursors of plasmacytoid dendritic cells and is more infrequent in children than in adults. Formerly known as blastic NK-cell lymphoma or CD4+/CD56+ hematodermic neoplasm, the BPDCN is reclassified into the group of acute myeloid leukemia and related neoplasm by WHO in 2008. An 8-year old girl is being presented with bruise-like subcutaneous nodules with purpura on her right cheek from the performed biopsy. Histological examinations show sheet-like dense infiltrations of medium-sized lymphoid cells with irregular nuclei in the entire dermis. Immunohistochemical stainings of tumor cells were positive for CD4, CD56, LCA, TCL-1, TdT and focal positive for CD3, CD7, CD45RO and negative for CD20, CD30, CD34, EBV. The PET-CT scans indicate hot uptakes in the bone marrows which are suggestive of malignant infiltrations, and bone marrow biopsy findings are consistent with BPDCN of leukemic transformations. We present a rare case of BPDCN which affects the pediatric patient. (Korean J Dermatol 2013;51(12):970∼974)