Computer-aided dermoscopy for diagnosis of melanoma

BACKGROUND: Computer-aided dermoscopy using artificial neural networks has been reported to be an accurate tool for the evaluation of pigmented skin lesions. We set out to determine the sensitivity and specificity of a computer-aided dermoscopy system for diagnosis of melanoma in Iranian patients. METHODS: We studied 122 pigmented skin lesions which were referred for diagnostic evaluation or cosmetic reasons. Each lesion was examined by two clinicians with naked eyes and all of their clinical diagnostic considerations were recorded. The lesions were analyzed using a microDERM(® )dermoscopy unit. The output value of the software for each lesion was a score between 0 and 10. All of the lesions were excised and examined histologically. RESULTS: Histopathological examination revealed melanoma in six lesions. Considering only the most likely clinical diagnosis, sensitivity and specificity of clinical examination for diagnosis of melanoma were 83% and 96%, respectively. Considering all clinical diagnostic considerations, the sensitivity and specificity were 100% and 89%. Choosing a cut-off point of 7.88 for dermoscopy score, the sensitivity and specificity of the score for diagnosis of melanoma were 83% and 96%, respectively. Setting the cut-off point at 7.34, the sensitivity and specificity were 100% and 90%. CONCLUSION: The diagnostic accuracy of the dermoscopy system was at the level of clinical examination by dermatologists with naked eyes. This system may represent a useful tool for screening of melanoma, particularly at centers not experienced in the field of pigmented skin lesions

Pemphigus and pregnancy: A 23-year experience

Background: Studies on the interaction of pemphigus and pregnancy are limited to case reports and small case series. Pregnancy is not rare in Iranian pemphigus patients due to lower age at onset of the disease. Aim: We sought to investigate the outcome of pregnancy and the course of pemphigus in pemphigus patients in a retrospective study. Methods: The files of 779 pemphigus women younger than 50 presenting to our center from 1984 till 2006 were examined for any mention of pregnancy. Data related to outcome of pregnancy and the course of the disease were collected. Results: Sixty-six patients with a history of pregnancy were identified. Forty-eight known pemphigus patients experienced one or more pregnancies during their disease (total pregnancy number: 52). The course of pemphigus was as follows in this group: 28 cases (54%) of exacerbation, 15 cases (31%) with no alteration, and 9 cases (17%) showing improvement. The rate of abortion was 9.6% (5 cases). In 18 cases, the disease had started during pregnancy, 2 of them (11%) ended in an abortion. Overall, postpartum flare was seen in 33 cases (47.1%). Conclusion: Pemphigus may be exacerbated during or after pregnancy, but often to a mild degree. Although the rate of stillbirth was not as high as previously reported, the rate of abortion was considerable. Pregnancy may have an uneventful course, especially in patients in clinical remission; nevertheless, careful monitoring of the high risk mother and fetus is mandatory