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BRAF Mutation-Positive Folliculotropic Metastatic Melanoma

Authors: Katherine E, Brick; Kevin C, Halling; Yulia K, Khan; Margot S, Peters;

BRAF Mutation-Positive Folliculotropic Metastatic Melanoma

Abstract

Primary cutaneous folliculotropic melanoma has been described rarely, and there are even fewer published cases of folliculotropic metastases. We report a 54-year-old man with history of primary cutaneous melanoma of the right posterior shoulder, Breslow depth of 3.4 mm, with one positive sentinel lymph node, negative full axillary dissection, and no extranodal metastases at initial staging. Three years later, he presented with an asymptomatic isolated 2-mm blue-black papule on the scalp and was found to have widespread metastatic melanoma involving lymph nodes, liver, adrenal glands, subcutaneous tissue, skeleton, and lung. Histopathologic examination of the scalp lesion demonstrated a tumor nodule composed of sheets and nests of large round to polygonal cells centered about a hair follicle and within follicular epithelium. BRAF V600E gene mutation was documented in this lesion, and the patient received vemurafenib, with dramatic improvement noted on positron emission tomography scan after 2 months of treatment, soon followed by development of extensive metastases, including to brain. Although BRAF mutations have been found in primary and metastatic melanomas of the skin, and in melanoma metastases of extracutaneous sites, to our knowledge, this is the first case of a BRAF mutation documented in folliculotropic metastatic melanoma.

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Keywords

Aged, 80 and over, Male, Proto-Oncogene Proteins B-raf, Indoles, DNA Mutational Analysis, Palliative Care, Antineoplastic Agents, Middle Aged, Phenotype, Lymphatic Metastasis, Mutation, Disease Progression, Humans, Lymph Node Excision, Female, Genetic Predisposition to Disease, Melanoma, Protein Kinase Inhibitors, Aged, Neoplasm Staging

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Powered by OpenAIRE graph
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Average
Average
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