Melanoma Diagnosis
Melanoma Diagnosis - Related Videos
03:52
Experimental Metastatic Melanoma Mouse Model: A Platform to Study the Metastatic Potential of Melanoma Cells in the Lungs
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2023
In this video, melanoma cells are intravenously injected through the tail vein in the mouse model. The melanoma cells further travel through the circulatory system, adapting to the distant microenvironment and causing metastasis in organs like lungs.
09:52
Isolated Hepatic Perfusion as a Treatment for Liver Metastases of Uveal Melanoma
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Cited by 23 •
2015
Here, we present a protocol how to perform an isolated liver perfusion (IHP) with melphalan and we also discuss IHP as a treatment option for liver metastases of uveal melanoma.
07:34
FISH for Pre-implantation Genetic Diagnosis
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Cited by 17 •
2011
This article describes the selection of suitable probes for single-cell FISH, spreading techniques for blastomere nuclei, and in situ hybridization and signal scoring, applied to pre-implantation genetic diagnosis (PGD) in a clinical setting.
05:40
Melanoma Stem Cell Isolation: A Method to Obtain CD133 Positive and Negative Melanoma Cells Using Magnetic-activated Cell Sorting
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2023
This video describes the technique of isolating CD133 negative and positive melanoma stem cells from a primary melanoma cell line using magnetic-activated cell sorting. The CD133 positive melanoma CSCs are further studied to understand the mechanisms of melanoma tumorigenesis.
10:23
Screening for Melanoma Modifiers using a Zebrafish Autochthonous Tumor Model
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Cited by 32 •
2012
A rapid way to screen for melanoma modifiers using a zebrafish autochthonous tumor model is presented. It takes advantage of the miniCoopR vector which allows for expression of candidate melanoma genes in melanocytes. A method to obtain melanoma-free survival curves, an invasion assay, a protocol for antibody staining of scale melanocytes and a melanoma transplantation assay are described.
FAQs
Dermoscopy improves lesion assessment by magnifying and illuminating the skin surface, allowing clinicians to examine patterns that may be difficult to appreciate during an unaided examination. Asymmetry, irregular borders, uneven pigmentation, and structural changes become part of a more detailed evaluation. This added visual information helps determine which lesions require tissue sampling for microscopic assessment.
Concern rises when a lesion shows multiple atypical features rather than a uniform, orderly appearance. During evaluation, clinicians look for asymmetry, irregular borders, varied pigmentation, and structural changes, then interpret these findings together rather than relying on one sign alone. This pattern-based assessment helps distinguish lesions that warrant biopsy from those that may be benign.
Biopsy supplies tissue for microscopic examination by a pathologist, providing the confirmation that visual assessment alone cannot establish. Histopathologic review helps distinguish melanoma from benign lesions and from other malignant lesions. That confirmation is clinically important because subsequent decisions about staging, prognosis, treatment, and surveillance depend on an accurate diagnosis.
Evaluation generally proceeds from direct skin examination to dermoscopy, followed by biopsy when the lesion requires definitive assessment. Dermoscopy magnifies and illuminates the lesion, while pathology examines sampled tissue microscopically. If melanoma is confirmed or disease extent needs clarification, clinicians may add imaging or molecular testing in selected cases.
These tests are not presented as routine replacements for examination, dermoscopy, or biopsy. In selected cases, they can provide information about disease extent or supply molecular information that helps guide treatment. Their use therefore depends on the clinical situation and the questions remaining after the initial lesion assessment and tissue diagnosis.
An accurate result does more than label a lesion. It supports earlier intervention, contributes to staging and prognosis, and helps clinicians choose among surgical treatment, systemic treatment, or surveillance strategies. The diagnostic information therefore connects initial skin findings and microscopic confirmation with decisions about disease management and ongoing follow-up.