弥漫性躯体血管角皮瘤1例

患者男,19岁。躯干部出现粟粒大暗红色皮疹10年余。病理检查示:角化过度,真皮乳头增宽,乳头内可见高度扩张的管腔,管壁为单层内皮细胞,管腔中大量红细胞。诊断:弥漫性躯体血管角皮瘤。     

反射式共聚焦显微镜联合皮肤镜在瑞尔黑变病诊断中的应用

目的 探讨瑞尔黑变病在反射式共聚焦扫描显微镜(RCM)和皮肤镜下的主要敏感图像特征.方法 招募7例经病理确诊为瑞尔黑变病的患者,所有患者均经RCM和皮肤镜成像,记录并分析图像特征.结果 皮损处RCM主要敏感图像特征:真表皮交界处模糊不清,基底细胞环不完整.真表皮交界处、真皮乳头处数量不等的形状不规则的高折光细胞,散在中...     

Dermoscopy as an Auxiliary Tool in the Assessment of Malassezia Folliculitis: An Observational Study

Malassezia folliculitis is an under-recognizedentity commonly affecting the face and upper trunk. Clinical picture mimics acne vulgaris and diagnosis is challenging at times. 10% potassium hydroxide examination is usually performed to confirm the diagnosis. This study sought to describe the dermoscopic features in Malassezia folliculitis. Patients diagnosed clinically with Malassezia folliculitis and confirmed by 10% potassium hydroxide preparation were included in the study. Dermoscopy was performed with a videodermatoscope [Dinolite AM413ZT; Polarising] from the most representative lesion. A total of 45 patients (M:F = 1:0.8 ) were recruited. All patients had monomorphic papulo-pustular lesions. Itching was present in 64.4% patients. Dermoscopy reveled folliculocentricity (100%), perilesional background erythema (100%), dotted/linear/tortous vessels (88.9%), dirty white scaling (77.8%), hypo pigmentation of hair follicle (64.4%), coiled/looped hairs (57.8%) and broken hairs (13.3%).In conclusion, dermoscopy shows typical features in Malassezia folliculitis and can serve as a office based tool for identification of this entity.     

Angiokeratoma of Fordyce response to long pulsed Nd:YAG laser treatment

Angiokeratoma of Fordyce can be easily diagnosed by their typical erythra and cured by varied therapeutic methods including surgery, electrocoagulation, cryotherapy, or various laser systems. Which are the optimal therapeutic methods? There are no consentaneous opinions in the reported articles. We present our characteristic treatment with the application of long pulsed neodymium–dopedyttrium–aluminum–garne (lpNd:YAG) laser in the treatment of angiokeratoma of Fordyce. A 1064 nm lpNd:YAG laser (spot size: 5 mm/7 mm, energy:90–130 J/cm², and pulse duration: 10–20 ms.) was used to treat the patient's lesions. The desirable clinical endpoint of the treatment was lesions shrunk and turned pallor immediately after the irradiation. The treatment interval was at least 8 weeks. Of the 11 patients, 9 of them were cured and 2 of them were improved. The mean treatment sessions were 2.2 times. None of them had a scar formation and any other side effects. All of them were satisfied with the treatment results. We conclude that angiokeratoma of Fordyce responded well to lpNd:YAG laser treatment. It provided a simple, rapid, and no bleeding treatment in treating Angiokeratoma of Fordyce.     

Dermoscopy of lichen aureus

Lichen aureus (also called "lichen purpuricus") is an uncommon subtype of pigmented purpuric dermatosis. Clinically characterized by rust macules, papules or plaques, it is a chronic disease which more often affects young adults and is localized mainly on the lower extremities. The diagnosis is made on the basis of clinical and histopathological features. Dermoscopy findings are useful to confirm clinical diagnosis.     

The Diagnostic Accuracy of Dermoscopy for Scabies

Background

Scabies is a contagious skin infestation characterized clinically by nocturnal pruritus, visible burrows and contagiousness. Dermoscopy has been suggested as an alternative for diagnosing scabies. But, there have been few well-designed studies evaluating the diagnostic accuracy of dermoscopy.

Objective

We tried to confirm the diagnostic accuracy of dermoscopy for diagnosing scabies. We also tried to demonstrate specific circumstances in which dermoscopic identification of mites ("with dermoscopy") is more useful in diagnosing scabies, and to identify the specific clinical findings that could be used as a possible marker in diagnosing scabies.

Methods

We compared the scraping procedure "with dermoscopy" and "without it" in 49 patients, measuring the duration and outcome of each procedure. Also, we tried to find the specific clinical factors associated with our objects.

Results

The skin scraping "with dermoscopy" was superior to "without it" with respect to the duration and accuracy of the procedure. A history of previous steroid treatment was associated with the superiority of dermoscopy. The correlation between the presence of visible burrows and the positive outcomes of "with dermoscopy" was statistically significant.

Conclusion

Skin scraping with dermoscopy is implicated as the diagnostic method of choice for scabies at the present time. Dermoscopy is especially useful in diagnosis of incognito scabies. In addition, the presence of visible burrows could be a reliable positive marker of scabies in the absence of dermoscopy or microscopy data.     

Dermoscopy as an auxiliary tool for the diagnosis of furuncular myiasis

Furuncular myiasis occurs after larvae penetrate on the skin. The disease is characterized by the presence of a nodule with a central hole through which there is serosanguinous exudate drainage. The authors present a case of furuncular myiasis by Dermatobia hominis in which late diagnosis made it necessary to have the orifice margins surgically enlarged in order to extract the larva. They also emphasize that dermoscopy is a useful auxiliary tool in this diagnosis.     

Acral Lentiginous Melanoma Developing during Long-standing Atypical Melanosis: Usefulness of Dermoscopy for Detection of Early Acral Melanoma

Clinical guidelines suggest that suspicious pigmented lesions of the plantar or palmar area require biopsy for early detection of acral melanoma. We present here a case of acral lentiginous melanoma in which various melanocytic atypia was observed at each biopsy site, including focal melanocytic proliferation. We suggest that this atypical melanosis is part of a contiguous phase of invasive tumor growth, which is known as the very early stage of melanoma in situ. In addition, noninvasive dermoscopy has been effective for the early discovery of hidden lesions of acral melanoma.     

Dermoscopy assisting the diagnosis of mycetoma: case report and literature review

Mycetomas are a chronic skin infection characterized by perilesional edema, formation of sinus tracts, and discharge of purulent or seropurulent exudate containing grains. This report aims to demonstrate the clinical diagnosis (by dermoscopy) of a skin lesion that initially bared no clinical features of a mycetoma.     

皮肤镜在色素性皮损中的应用

皮肤镜是一种非侵袭性的在体诊断和鉴别诊断方法。它可以帮助临床医生评价许多肉眼无法看到的形态学特征和提高对色素性皮损的诊断。近年,皮肤镜的应用范围不断扩大,并出现了一些新术语和技术改进。对皮肤镜常用参数,尤其是在特殊解剖部位的应用,以及为简化诊断而形成的多种皮肤镜诊断标准和在随访及自动诊断中的作用进行评价。     

皮肤镜在微小色素型基底细胞癌诊断中的初步研究

目的 评价皮肤镜在微小色素型基底细胞癌诊断中的价值.方法 体表疑似微小(皮损直径＜5 mm)色素型基底细胞癌患者58例,男19例,女39例;年龄16～82岁;病程3个月至25年.对每例皮损进行皮肤镜检查,留皮肤镜照片.由两名医生参照色素型基底细胞癌皮肤镜特点,仅根据照片盲法独立进行诊断.以病理诊断为金标准,通过诊断性试验的研究方法,研究皮肤镜在微小色素型基底细胞癌诊断中的敏感度、特异度及一致性.结果 58例患者中36例经组织病理学诊断为基底细胞癌,医生A皮肤镜诊断为色素型基底细胞癌41例,不是色素型基底细胞癌17例;医生B皮肤镜诊断为色素型基底细胞癌40例,不是色素型基底细胞癌18例.与病理诊断相比,两名医生皮肤镜诊断色素型基底细胞癌的灵敏度、特异度、Youden指数及Kappa值分别为97.22％、72.73％、69.95％、0.732 (P＞ 0.05)和97.22％、77.27％、74.49％、0.772(P＞0.05).结论 皮肤镜对微小色素型基底细胞癌诊断与组织病理学检查结果有较好的一致性.     

Dermoscopy applied to pediculosis corporis diagnosis

We report the case of a 47-year-old homeless male with a massive infestation of Pediculus humanus corporis on his entire body. Dermoscopy helped to diagnose pediculosis by showing the involvement of scalp, beard and the genital region in this disease.     

Dermoscopy of annular elastolytic giant cell granuloma

Annular elastolytic giant cell granuloma is an uncommon granulomatous cutaneous disease that usually affects sun-exposed skin. Non-scarring alopecia is a possible presentation. Although histopathology is mandatory for the diagnosis, dermoscopy may help to narrow down the clinical differential diagnosis. The authors report a case of annular elastolytic giant cell granuloma in the scalp of a female adult patient, showing multiple yellowish/orange follicular dots in a diffuse erythemato-whitish background in the dermoscopy.