Results 41 to 50 of about 306,099 (237)
Attention-Driven Lightweight Model for Pigmented Skin Lesion Detection [PDF]
arXiv, 2023 This study presents a lightweight pipeline for skin lesion detection, addressing the challenges posed by imbalanced class distribution and subtle or atypical appearances of some lesions. The pipeline is built around a lightweight model that leverages ghosted features and the DFC attention mechanism to reduce computational complexity while maintaining ...
arxiv
Journal of Investigative Dermatology, 1989 A 32-year-old Japanese woman with a giant pigmented congenital nevus of the torso presented with a massive pigmented tumor mass of the vulva which grew over an 8-year period. Histologically, the tumor was composed of benign appearing nevus-like cells with focal areas of extensive fibrous response.
Tatsuyoshi Arao +4 more
openaire +3 more sources
Dermatology Practical & Conceptual, 2014 Balloon cell melanoma is a rare melanoma subtype, with only one previous case with dermatoscopy published. It is often non-pigmented, leading to diagnostic difficulty, and there is a tendency for lesions to be thick at diagnosis.
James Maher +5 more
doaj +1 more source
Nonphotosynthetic Pigments as Potential Biosignatures [PDF]
Astrobiology 15(5): 341-361 (2015), 2015 Previous work on possible surface reflectance biosignatures for Earth-like planets has typically focused on analogues to spectral features produced by photosynthetic organisms on Earth, such as the vegetation red edge. Although oxygenic photosynthesis, facilitated by pigments evolved to capture photons, is the dominant metabolism on our planet ...
arxiv +1 more source
Can Deep Learning Assist Automatic Identification of Layered Pigments From XRF Data? [PDF]
arXiv, 2022 X-ray fluorescence spectroscopy (XRF) plays an important role for elemental analysis in a wide range of scientific fields, especially in cultural heritage. XRF imaging, which uses a raster scan to acquire spectra across artworks, provides the opportunity for spatial analysis of pigment distributions based on their elemental composition.
arxiv
Argon Laser Photoablation of Conjunctival Pigmented Nevus
American Journal of Ophthalmology, 2006 To evaluate the efficacy of an argon laser in the ablation of benign conjunctival pigmented nevi.Interventional case series.We conducted argon laser ablations for conjunctival pigmented nevus in 30 eyes of 28 patients. Laser ablation was applied directly to the conjunctival pigmented nevus in all patients. All patients were followed up over a period of
Tae Im Kim +8 more
openaire +4 more sources
Giant congenital melanocytic nevus with neurofibroma-like lesions and onset of vitiligo
Journal of Dermatology and Dermatologic Surgery, 2015 Giant congenital pigmented nevus and neurofibromatosis type 1 may rarely occur together. We reported here an unusual case where giant congenital melanocytic nevus was associated with neurofibroma-like lesions and vitiligo, emphasizing the clinical and ...
Iman Hadj +3 more
doaj +1 more source
Efficient structural color from pigment-loaded nanostructures [PDF]
arXiv, 2023 Color can originate from wavelength-dependence in the absorption of pigments or the scattering of nanostructures. While synthetic colors are dominated by the former, vivid structural colors found in nature have inspired much research on the latter. However, many of the most vibrant colors in nature involve the interactions of structure and pigment ...
arxiv
bioRxiv, 2020 Mutational activation of the BRAF proto-oncogene in melanocytes reliably produces benign nevi (pigmented “moles”), yet the same change is the most common driver mutation in melanoma.
Rolando Ruiz-Vega +10 more
semanticscholar +1 more source
The usefulness of c-Kit in the immunohistochemical assessment of melanocytic lesions
European Journal of Histochemistry, 2011 C-Kit (CD117), the receptor for the stem cell factor, a growth factor for melanocyte migration and proliferation, has shown differential immunostaining in various benign and malignant melanocytic lesions.
L. Pilloni +9 more
doaj +1 more source