Lymphatic flow is mostly preserved after sentinel lymph node biopsy in primary cutaneous malignant melanoma

Journal of Dermatological Science
Kenji YokotaMasashi Akiyama

Abstract

Knowledge of changes in lymphatic flow after sentinel lymph node biopsy (SLNB) is important for the development of strategies for postoperative adjuvant therapy in malignant melanoma. 41 patients (22 males and 19 females; average age: 67.0 ± 24.0 years) with primary cutaneous malignant melanoma (PCMM) participated in the present study. The primary tumor sites were the upper extremities (9 patients), the lower extremities (20 patients), the trunk (11 patients) and the scalp (1 patient). The tumor thicknesses of the PCMM lesions were from 0.5mm to 9.0mm (average: 3.3 ± 2.5mm). All the participants underwent wide local excision and SLNB. We studied lymphatic flow before and after SLNB by near-infrared (NIR) imaging in all 41 cases. In addition, we performed NIR imaging of lymphatic flow after the lymph node dissection in one case with sentinel lymph node (SLN) metastasis. Almost no changes in lymphatic flow were seen in 38 of the 41 patients (92.7%) after SLNB. Only in 3 patients (7.3%), one with SLN metastasis and the other two without SLN metastasis, was apparent alteration in the lymphatic flow observed after SLNB. Of the 16 patients without SLN metastasis, only 3 patients showed recurrence of the tumors. Interestingly, 1 of th...Continue Reading

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