Dermoscopic clues in the diagnosis of amelanotic and hypomelanotic malignant melanoma*
نویسندگان
چکیده
The clinical identification of amelanotic malignant melanoma (AMM) and hypomelanotic malignant melanoma (HMM) becomes difficult due to the lack of pigmentation and to the diverse clinical presentations. Dermoscopy is very useful in these cases, increasing the level of suspicion of malignancy. We report 4 cases of amelanotic malignant melanoma and hypomelanotic malignant melanoma with characteristic dermoscopic findings. Dermoscopy under polarized light demonstrates vascular polymorphism, globules and milky-red areas, in addition to chrysalis and multiple blue-gray dots.
منابع مشابه
Dermoscopic appearance of an amelanotic mucosal melanoma
BACKGROUND Hypomelanotic or amelanotic melanomas are challenging to identify, especially at mucosal sites. The dermoscopic clues to the diagnosis of mucosal melanomas have been reported to be structureless zones with the presence of blue, gray, or white colors. CASE A female in her seventies noted a new lesion on the inside of her right labia that first appeared two months prior. Her past med...
متن کاملAmelanotic malignant melanoma: a case study demonstrating pitfall of frequently missed opportunity for early diagnosis
Malignant melanoma is the most common primary malignant tumor of the foot. Amelanotic/hypomelanotic melanoma is characterized by either little or no pigmentation and account for 2-8% of all primary melanomas. Amelanotic/hypomelanotic can often be misdiagnosed and this leads to delaying the diagnosis until advanced ulcerations depths resulted in metastases. In this report, we highlight a case of...
متن کاملThe diagnostic challenge of amelanotic melanoma – case reports and short review of the literature
Introduction Cutaneous melanoma represents a very aggressive type of cancer that has one of the fastest growing incidences worldwide, with over 150000 new cases estimated in developing countries in 2010 (Jemal et al 2011). Although it represents only 10% of the total cutaneous malignant tumours, melanoma is responsible for over 90% of the deaths caused by these tumours (Jemal et al 2011). Amela...
متن کاملDermoscopic evaluation of amelanotic and hypomelanotic melanoma.
OBJECTIVE To determine the predictive dermoscopic features of amelanotic and hypomelanotic melanoma. DESIGN A total of 105 melanomas (median Breslow thickness, 0.76 mm), 170 benign melanocytic lesions, and 222 nonmelanocytic lesions lacking significant pigment (amelanotic, partially pigmented, and light colored) were imaged using glass-plate dermoscopy devices and scored for 99 dermoscopic fe...
متن کاملPigmented Bowens disease mimicking malignant Melanoma: A case report
Pigmented Bowens disease is an in situ squamous cell carcinoma, which is seldom reported in white patients. Herein we report a 20-year-old woman with type III skin, who had this lesion on the fourth finger of her right hand, similar to superficial malignant melanoma, clinically. Although dermoscopic evaluation could be helpful, correct diagnosis of non-melanotic origin is done by histological e...
متن کامل