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Follicular malignant melanoma: Primary follicular or folliculotropic?

Publicated to:AMERICAN JOURNAL OF DERMATOPATHOLOGY. 37 (1): 15-19 - 2015-01-01 37(1), DOI: 10.1097/DAD.0000000000000087

Authors: Machan S; El Shabrawi-Caelen L; Nikolay E; Kerl H; Requena L; Cerroni L

Affiliations

Department of Dermatology, Fundaciõn Jiménez Díaz, Universidad Autõnoma, Madrid, Spain - Author
Institute of Pathology, General Hospital of Leoben, Austria - Author
Research Unit of Dermatopathology, Department of Dermatology, Medical University of Graz, Auebruggerplatz 8, Graz, Austria - Author

Abstract

Follicular malignant melanoma (FMM) is a rare variant of melanoma arising on sun-damaged skin of elderly patients. It is characterized histopathologically by a prominent involvement of 1 or 2 adjacent hair follicles. The authors report 3 new cases of FMM (M:F = 2:1; age range, 23-67 years; median age, 50 years) located on the scalp, cheek, and upper back. Complete effacement of the hair follicle, replaced by neoplastic melanocytes, was observed in 1 case. The interfollicular epidermis and adventitial dermis were involved in all 3 cases. Our series shows that FMM is not restricted to elderly patients but may arise also in young individuals without association with chronic sun damage. FMM should be distinguished from folliculotropic metastases of melanoma and from atypical melanocytic nevi. Although the histopathological features and the term FMM may suggest a derivation from melanocytes of the hair follicle, the exact origin of neoplastic cells is yet unclear, and at least some of these cases may represent folliculotropic examples of primary epidermal malignant melanoma.

Keywords

AdultAgedArticleBackBasal cell carcinomaBiopsyCancer localizationCase reportCheekChemistryClassificationDermisDiagnosis, differentialDifferential diagnosisElastosisEpidermisFemaleFollicular malignant melanomaFolliculotropic metastatic melanomaHair follicleHair folliclesHead and neck neoplasmsHead and neck tumorHistopathologyHumanHuman tissueHumansImmunohistochemistryMaleMalignant melanomaMelan aMelanocyteMelanocytesMelanocytic nevusMelanomaMiddle agedMonoclonal antibody hmb 45PathologyPredictive valuePredictive value of testsPriority journalProtein s 100Rare diseaseScalpSex ratioSkin bleedingSkin defectSkin necrosisSkin neoplasmsSkin tumorStratum corneumSun exposureTumor markerTumor markers, biologicalTumor necrosisYoung adult

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal AMERICAN JOURNAL OF DERMATOPATHOLOGY due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2015, it was in position , thus managing to position itself as a Q2 (Segundo Cuartil), in the category Medicine (Miscellaneous). Notably, the journal is positioned en el Cuartil Q3 for the agency WoS (JCR) in the category Dermatology.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations from Scopus Elsevier, it yields a value for the Field-Weighted Citation Impact from the Scopus agency: 1.84, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Field Citation Ratio (FCR) from Dimensions: 2.35 (source consulted: Dimensions Jun 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-06-26, the following number of citations:

  • WoS: 14
  • Scopus: 16
  • Europe PMC: 8
  • OpenCitations: 16

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-26:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 10.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 12 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 18.45.
  • The number of mentions on the social network X (formerly Twitter): 31 (Altmetric).

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Austria.