Bilateral Segmental Neurofibromatosis with Lentiginosis Showing a Checkerboard Pattern / 대한피부과학회지

Segmental neurofibromatosis, a subtype of neurofibromatosis type 1, is characterized by neurofibromas and/or café-au-lait spots limited to an area or segment of the body. Checkerboard pattern is a rare type of cutaneous mosaic manifestation, characterized by squares or broad ribbons of affected skin with sharp demarcation at the midline. Herein, we report the case of a patient with bilateral segmental neurofibromatosis with lentiginosis showing a checkerboard pattern. Our patient had multiple hyperpigmented macules on her entire body in a checkerboard pattern since birth. Several café-au-lait patches were observed on the left buttock and right axilla. A neurofibroma was incidentally found beneath the café-au-lait patch by histological examination, which showed ill-defined spindle cells with elongated nuclei at the deep dermis that stained positive for S-100. Based on the clinical presentation and histopathologic results, the patient was diagnosed with bilateral segmental neurofibromatosis with lentiginosis showing a checkerboard pattern.

Basal Cell Carcinoma with Metaplastic Bone Formation / 대한피부과학회지

No abstract available.

Circulating Eosinophil and Neutrophil Counts Correlate with Disease Severity in Bullous Pemphigoid

BACKGROUND: Bullous pemphigoid (BP) is an autoimmune subepidermal blistering disease characterized by tissue-bound and circulating autoantibodies directed against BP180 and/or BP230 antigens. Various inflammatory cells are involved in the development of blister in BP. OBJECTIVE: The aim of this study was to evaluate the correlation between peripheral leukocyte counts and BP severity. METHODS: We retrospectively included 60 patients with BP, who had not been treated with systemic steroid at the time of blood sampling. The patients were classified into two groups, those with admission history (admission group) and those without admission history (non-admission group). Disease severity was evaluated using three parameters: admission history, initial steroid dosage, and modified version of a pemphigus scoring system. We evaluated the correlation between peripheral leukocyte counts and disease severity measured by the three parameters. RESULTS: The admission group showed a significant increase in disease severity measured by initial steroid dosage and severity score compared with the non-admission group. Additionally, the admission group had increased total leukocyte, eosinophil, and neutrophil counts. In the correlation study, the peripheral eosinophil and neutrophil counts showed positive correlation with BP severity evaluated by both initial steroid dosage and the pemphigus scoring system. CONCLUSION: Peripheral eosinophil and neutrophil counts can be used as a marker in predicting disease severity in patients with BP.

Sclerema Neonatorum in a Full-Term Infant Showing Favorable Prognosis

Sclerema neonatorum (SN) is a rare disease characterized by firm, indurated, waxy skin lesions extending throughout the body, sparing the fat-free soles, palms, and genitalia. The prognosis of SN is generally very poor, with a high fatality rate. We report the case of a full-term infant with delayed onset of SN showing good prognosis. A 4-month-old Korean male infant presented with diffuse waxy, sclerotic skin lesions on the whole body, sparing the face, nipples, and genital area, which began developing at 2 months of age. Histopathologic findings of the sclerotic skin lesions showed wide, fibrous intersecting bands in the subcutaneous fat tissue. Only sparse infiltration of lymphocytes and histiocytes was observed in the fat lobules and septa. Based on clinical presentation and histopathologic findings, he was diagnosed with SN. The patient survived with conservative care and had mild improvement of the skin lesions on his follow-up visit at 12 months of age.