ArticleDermatology practical & conceptual2024
Stage IIA Cutaneous Melanoma: Do Regional Ultrasound and CT scan Improve Detection of Relapses? A Multicenter Retrospective Observational Study.
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Abstract
introductionStage IIA cutaneous melanoma is typified by a Breslow thickness between 1.1 and 2.0 mm with ulceration or between 2.1 and 4.0 mm without ulceration. The role of radiological investigations in staging and follow-up of this intermediate-risk subgroup of patients is still debated.
objectivesThe aim of this study is to investigate the role of imaging procedures in the follow-up of stage IIA melanoma asymptomatic patients.
methodsData were retrieved from two tertiary referral centers in Italy. Among patients with stage IIA melanoma, those who relapsed were investigated concerning type of detection (by patient or by doctor), and modality of detection (clinical examination, ultrasound, CT scan). In addition, false positive data were collected.
resultsIn total, 213 patients were retrieved, with 26 patients showing relapse (recurrence rate, 12.2%). The mean follow-up time was 3 years and the mean time to recurrence was 17.8 months. 21/26 (80.7%) recurrences were identified by the doctor and 5/26 (19.2%) by the patient (P < 0.05). Among those identified by the doctor, 16/21 (76,1%) were identified by radiological examinations. Nine out of 15 (60%) lymph node recurrences were detected by ultrasound and 6/7 (85.7%) distant metastases were detected by CT. The false positive rate was 7% (P < 0.05).
conclusionsIn our study the great majority of metastases were detected using imaging procedures. Given the new therapeutic options offered by targeted therapy and immunotherapy in relapsing patients, the role of radiological investigations in the follow-up of stage IIA patients should be reconsidered.
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