No abstract available.
Dermoscopy ; Melanoma*

No abstract available.
Condylomata Acuminata* ; Dermoscopy* ; Diagnosis, Differential* ; Lymphangioma* ; Vulva*

Vinorelbine, a vinca alkaloid anticancer drug, is widely used to treat various cancers. Several dermatological side effects of vinorelbine, such as acral erythema, phlebitis, and severe extravasation reactions, have been reported. Vinorelbine is categorized as non-DNA binding vesicant that undergoes high metabolism and clearance, which limits the degree of tissue injury if extravasation occurs. A 73-year-old male presented with erythematous linear patches on his left wrist and a 51-year-old male presented with erythematous eroded patches and bullae on his right forearm. Histopathologic study showed interface changes with basal vacuolar degeneration and epidermal dysmaturation. Separation of the dermis from the epidermis was observed, as well as interstitial and perivascular inflammatory infiltrates in the dermis. Both patients were being treated with vinorelbine for lung cancer. Before the onset of the skin lesions, accidental intravenous extravasation of vinorelbine had occurred. Herein, we report two cases of chemotherapy induced drug reaction due to extravasation of vinorelbine.
Aged ; Cytochrome P-450 CYP1A1 ; Dermis ; Drug Therapy ; Epidermis ; Erythema ; Forearm ; Humans ; Lung Neoplasms ; Male ; Metabolism ; Middle Aged ; Phlebitis ; Skin ; Vinca ; Wrist

Diabetes, which has shown an explosive increase in terms of its incidence, is regarded as a serious disease that must be overcome for the sake of human life. Among animal models used for testing of drug efficacy, the mini-pig model has shown a rapid upload due to its many similarities with human, particularly concerning the pharmacokinetics of compounds after subcutaneous administration, the structure and function of the gastrointestinal tract, the morphology of the pancreas, and overall metabolic status. Based on these various advantages, we sought to develop an animal model of type II diabetic mellitus using the Micro-pig, which differs from other miniature pigs. We used six male Micro-pigs for induction of a moderate insulin deficient model with nicotinamide (NIA)/streptozotocin (STZ) treatment and three animals for control. For evaluation of incidence of type II diabetes, we measured blood glucose level, and performed oral glucose tolerance test and immunohistochemistry on pancreatic tissue using insulin antibody. Compared to control animals, all animals treated with NIA/STZ showed high levels of glucose and low levels of insulin. In addition, we observed the partially destroyed beta cell population from tissue of the pancreas in treated animals. Based on these results, we report that the Micro-pig model developed in this study can be used for testing of the efficacy of therapeutic agents for treatment of Type 2 diabetic mellitus.
Animals ; Blood Glucose ; Gastrointestinal Tract ; Glucose ; Glucose Tolerance Test ; Humans ; Immunohistochemistry ; Incidence ; Insulin ; Male ; Models, Animal ; Niacinamide ; Pancreas ; Swine

Spitz nevus is a benign melanocytic nevus, common in children or young adults, and it has histological features that are confused with those of malignant melanoma. Polypoid Spitz nevus is the benign counterpart of polypoid malignant melanoma. A 22-year-old woman presented with a solitary 1.5×1.5 cm-sized firm polypoid erythematous nodule on the left thigh. On dermoscopy, pink to yellowish lagoons intermingled by white fibrous septa were found but milky red globules or irregular linear vessels were not found. Therefore, melanoma almost could be ruled out cautiously. Histopathology showed symmetrical, well-circumscribed, polypoid architecture with predominant dermal nests of spindle cells. Immunohistochemically, the nevus cells were strongly positive for S-100 protein and negative for HMB-45. Thus, the diagnosis of polypoid Spitz nevus was made. Herein, we report a case of polypoid Spitz nevus that was differentiated from polypoid melanoma by histopathologic and dermoscopic findings.
Child ; Dermoscopy ; Diagnosis ; Female ; Humans ; Melanoma ; Nevus ; Nevus, Epithelioid and Spindle Cell* ; Nevus, Pigmented ; S100 Proteins ; Thigh ; Young Adult

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. A 24-year-old female presented with an asymptomatic, solitary, dark-brown-colored papule surrounded by brownish patch that looked similar to dysplastic nevus or malignant melanoma on the buttock. On dermoscopic examination, it showed brown-to-black globules, diffuse homogenous pigmentation with blue-white structures, and a surrounding brownish reticular pattern that faded away. On histopathologic findings, overall asymmetrical structure, epithelioid large melanocytes containing large nuclei with abundant cytoplasm, and Kamino body were seen in the central portion. Also, lentiginous hyperplasia, bridging of the nests composed of melanocytes containing foamy cytoplasm, concentric and lamellar fibrosis along with the elongation of rete ridge, and perivascular lymphocytic infiltration were seen in the peripheral portion. The diagnosis of Spark’s nevus was made. Following its definition, this combined nevus is diagnosed histopathologically, but the clinicodermoscopic features have not been well described. Herein, we report a case of Spark’s nevus in which dermoscopy was helpful for differentiating it from malignant melanoma.

No abstract available.
Dermatitis* ; Granulocytes*

Degos 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. Approximately 15% of Degos disease have a benign course limited to the skin and no history of gastrointestinal or central nervous system (CNS) involvement. A 29-year-old female with history of systemic lupus erythematosus (SLE) presented with a 2-year history of asymptomatic lesions on the dorsum of all fingers and both knees. The patient had only skin lesions and no gastrointestinal or CNS vasculitis symptoms. Her skin lesions were umbilicated, atrophic porcelain-white lesions with a rim of erythema. On the basis of clinical, histologic, and laboratory findings, a diagnosis of Degos-like lesions associated with SLE was made. The patient had been treated for SLE for 7 years. Her treatment regimen was maintained over a 2 month follow-up period, and the skin lesions improved slightly with no development of new lesions.
Adult ; Autoimmune Diseases ; Central Nervous System ; Diagnosis ; Erythema ; Female ; Fingers ; Follow-Up Studies ; Humans ; Infarction ; Knee ; Lupus Erythematosus, Systemic* ; Malignant Atrophic Papulosis ; Skin ; Vasculitis ; Vasculitis, Central Nervous System

BACKGROUND: 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. OBJECTIVE: To analyze the dermoscopic features that can differentiate between ruptured and unruptured epidermal cysts. METHODS: The clinical and dermoscopic features of the pathologically confirmed epidermal cysts of two subgroups of 38 patients, 20 with unruptured cysts and 18 with ruptured cysts, were reviewed. RESULTS: With regard to the dermoscopic features, an ivory- white background color and punctum were commonly found in both groups (p>0.05). The unruptured-cyst group showed higher frequencies of pore sign (p<0.05), blue-white veil (p>0.05), no vascular structure, and arborizing telangiectasia (p<0.05), but the ruptured-cyst group usually had red lacunae (p>0.05) and peripheral linear branched vessels (with an erythematous rim) (p<0.05). CONCLUSION: Dermoscopy is helpful in differentiating between ruptured and unruptured epidermal cysts.
Dermoscopy* ; Diagnosis, Differential* ; Drainage ; Epidermal Cyst* ; Humans ; Telangiectasis

BACKGROUND: 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. OBJECTIVE: To analyze the dermoscopic features that can differentiate between ruptured and unruptured epidermal cysts. METHODS: The clinical and dermoscopic features of the pathologically confirmed epidermal cysts of two subgroups of 38 patients, 20 with unruptured cysts and 18 with ruptured cysts, were reviewed. RESULTS: With regard to the dermoscopic features, an ivory- white background color and punctum were commonly found in both groups (p>0.05). The unruptured-cyst group showed higher frequencies of pore sign (p<0.05), blue-white veil (p>0.05), no vascular structure, and arborizing telangiectasia (p<0.05), but the ruptured-cyst group usually had red lacunae (p>0.05) and peripheral linear branched vessels (with an erythematous rim) (p<0.05). CONCLUSION: Dermoscopy is helpful in differentiating between ruptured and unruptured epidermal cysts.
Dermoscopy* ; Diagnosis, Differential* ; Drainage ; Epidermal Cyst* ; Humans ; Telangiectasis