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Merkel Cell Polyomavirus Infection and Detection
Published on: February 7, 2019
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Merkel Cell Carcinoma: A 28-Year Experience.
Kera Kwan1, Shabnam Ghazizadeh1, Andy S Moon1
1Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.
Summary
Head and neck Merkel cell carcinoma (HN-MCC) management shows higher recurrence and negative sentinel lymph node biopsy (SLNB) rates than previously reported. Imaging is not a reliable substitute for SLNB in detecting occult disease.
Area of Science:
- Oncology
- Head and Neck Surgery
- Dermatology
Background:
- Head and neck Merkel cell carcinoma (HN-MCC) is a rare and aggressive skin cancer.
- Understanding optimal management and recurrence patterns is crucial for improving patient outcomes.
Purpose of the Study:
- To evaluate the management strategies and recurrence outcomes of HN-MCC.
- To assess the utility of imaging and sentinel lymph node biopsy (SLNB) in detecting occult disease.
Main Methods:
- Retrospective review of 60 patients with HN-MCC treated at a single tertiary center from 1990 to 2018.
- Analysis of management modalities including surgery, adjuvant therapy, and radiation therapy.
- Evaluation of imaging sensitivity/specificity and SLNB accuracy for occult disease detection.
Main Results:
- Sixty patients (67% male, mean age 73.3 years) were included.
- Imaging showed moderate sensitivity and specificity for occult disease detection.
- Neck dissection was performed in 42% and SLNB in 12%, with a high rate of negative SLNB findings.
- Recurrence-free survival at 1, 2, and 5 years was 50%, 45%, and 42%, respectively.
Conclusions:
- HN-MCC exhibits higher recurrence rates and a higher rate of negative SLNB results compared to other studies.
- Imaging is not a substitute for SLNB and has intermediate accuracy for detecting occult disease.
- Traditional predictors like SLNB and cervical node pathology may not reliably identify recurrence risk in HN-MCC.

