preprints.org > medicine and pharmacology > surgery > doi: 10.20944/preprints202307.1494.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 21 July 2023 / Approved: 21 July 2023 / Online: 21 July 2023 (10:07:46 CEST)

(1) Background: Melanoma is the most aggressive tumor located at the skin level and the man-agement of this pathology requires a correct staging as well as a modern oncological treatment, adapted to each patient. The main objective of the study is to determine the variability of lymphatic drainage in the case of melanomas located on the trunk; (2) Methods: This retrospective study in-cluded 62 cases of melanoma located on the trunk operated between July 2019 and March 2023 in which SLNB was performed and a total of 84 lymph node were excised; (3) Results: Patients had an average age of 54.5 years old, while melanomas had a mean Breslow index of 2.3 mm. The distri-bution of trunk melanomas was: upper trunk 54 cases, lower trunk 30 cases (64.3 % vs. 35.7%). The type of anesthesia chosen was general anesthesia in 53 cases, respectively spinal anesthesia in 9 cases (85.5% vs. 14.5%, p<0.001). The number of sentinel lymph nodes was 54 for melanomas lo-cated on the upper trunk, 8 cervical and 46 axillary, respectively 30 sentinel lymph nodes in cases of melanomas of the lower trunk, 16 at the axillary level and 14 at the inguinal level; (4) Conclusions: Lymph node involvement in melanoma represents an important prognostic factor and the different lymphatic drainage pathways in relation to the location of the primary tumor represents an im-portant objective in the management of this pathology.

trunk melanoma; SLNB; surgical treatment; lymphatic drainage

Medicine and Pharmacology, Surgery

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