Dermoscopy Clues in Pigmented Bowen′s Disease

Abstract

Pigmented tumors have similar clinical features that overlap and hamper diagnosis. Dermoscopy increases the diagnostic accuracy of doubtful melanocytic lesions and has been used as a noninvasive tool in the detection of pigmented lesions (PLs) like melanoma, basal cell carcinoma, and pigmented Bowen's disease (pBD). Our objective was to show the dermoscopic features of 2 cases of pBD and compare with the findings reported in the literature. Two dermoscopic images of biopsy proven pBD were retrospectively analyzed for dermoscopic patterns. Both cases showed brown regular globules, structureless brown and blue pigmentation, glomerular vessels, hypopigmented regression-like areas, and keratosis. These findings were similar to the cases reported previously. The dermoscopic diagnosis of pBD is based on the absence of criteria for a melanocytic lesion in the presence of glomerular vessels, regular brown globules and keratosis. Although pBD is rare, it should be included in the differential diagnosis of PLs, especially melanoma.

Dermoscopy of dermatofibrosarcoma protuberans: a study of 15 cases

“…12 Vessel structures were frequently observed in our patients' lesions (80%). Based on the improved recognition of vascular patterns, the use of dermoscopy has been recently extended to the differential diagnosis of nonpigmented tumoral lesions 14 such as amelanotic melanoma, 15 basal cell carcinoma, 16 Bowen disease, 17 clear cell acanthoma, 18 and more recently Kaposi sarcoma 19 and lymphoproliferative disorders. 20 In our patients' lesions, the vascular pattern almost exclusively consisted of arborizing vessels.…”

Dermoscopic and Reflectance Confocal Microscopy Findings in Extra-genital HPV16-associated Pigmented Squamous Cell Carcinoma in situ

“…These patients had dark skin phototype and no clinical signs of chronic photo-damage or significant risk factors for developing skin cancer. Pigmented SCCIS is a known melanoma-mimic, both clinically and dermoscopically (7)(8)(9)(10). RCM can be useful in establishing the specific bedside diagnosis of pigmented SCCIS and pigmented actinic keratosis in its various degrees of atypia (11).…”

What's new in dermoscopy of Bowen's disease: two new dermoscopic signs and its differential diagnosis

“…To date, there were several studies on dermoscopy of BD, indicating glomerular vessels, scaly surface, small brown globules, and structureless grey to brown pigmentation as its main dermoscopic features. However, most of these studies were case reports or of small case series, and SK, BCC, AK, LPLK, and MM et al . often share some dermoscopic features with BD, including scales, brown pigmentation, gray dots/granules, and dotted vessels, etc.…”