Lentigo maligna - anatomic location as a potential risk factor for recurrences after non-surgical treatment
| Autor: | V Noordhoek Hegt, Th. van der Klok, Karin Greveling, Errol P. Prens, M.B.A. van Doorn |
|---|---|
| Přispěvatelé: | Dermatology, Pathology |
| Rok vydání: | 2017 |
| Předmět: |
Male
Skin Neoplasms Original Articles and Short Reports Oncology Nose Neoplasms Dermatology Lentigo maligna Haematoxylin Nose Nose neoplasm Microphthalmia Hutchinson's Melanotic Freckle 030207 dermatology & venereal diseases 03 medical and health sciences chemistry.chemical_compound Sebaceous Glands 0302 clinical medicine Risk Factors Medicine Humans Aged Aged 80 and over Microphthalmia-Associated Transcription Factor business.industry Potential risk Anatomy Cheek Middle Aged medicine.disease Infectious Diseases medicine.anatomical_structure chemistry 030220 oncology & carcinogenesis Melanocytes Female Original Article Neoplasm Recurrence Local business Hair Follicle |
| Zdroj: | Journal of the European Academy of Dermatology and Venereology Journal of the European Academy of Dermatology and Venereology, 31(3), 450-454. Wiley-Blackwell |
| ISSN: | 0926-9959 |
| DOI: | 10.1111/jdv.13941 |
| Popis: | Background A higher incidence of lentigo maligna (LM) recurrences on the nose was previously observed in our cohort after non-surgical treatment. Objectives To determine histological parameters that might be related to the previously observed higher incidence of LM recurrences on the nose after non-surgical treatment. Methods We randomly selected 22 surgical specimens of LM on the nose and 22 on the cheek. Histopathological analysis was performed on haematoxylin and eosin stained and microphthalmia transcription factor immunohistochemically stained slides. The number of pilosebaceous units (PSU) per mm, maximum depth of atypical melanocytes along the skin appendages and maximum depth of the PSU itself were determined. Results The nose had a significantly higher density of PSU than the cheek. The atypical melanocytes extended deeper along the PSU on the nose with a mean (SD) depth of 1.29 mm (0.48) vs. a mean depth of 0.72 mm (0.30) on the cheek (P < 0.001). The maximum depth of the PSU on the nose was greater than on the cheek, mean (SD) depth of 2.28 mm (0.41) vs. 1.65 mm (0.82) (P = 0.003). Conclusions The higher recurrence risk of LM on the nose after non-surgical treatment that we previously observed in our cohort is most likely based on a higher density of atypical melanocytes and also their deeper extension into the follicles. These results shed more light on our previous findings and learn that anatomical location is relevant for the risk of recurrence of LM after non-surgical treatment. |
| Databáze: | OpenAIRE |
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