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Mild Hypofractionated Radiation Therapy for Merkel Cell Carcinoma
Toshiaki Matsui1, Naoko Okano1, Hidemasa Kawamura1
1Department of Radiation Oncology, Gunma University Graduate School of Medicine, Maebashi, JPN.
Cureus
|March 7, 2020
Summary
A mild hypofractionated radiation schedule may effectively treat inoperable Merkel cell carcinoma (MCC). This approach offers a viable alternative for elderly patients with MCC who cannot attend frequent hospital visits.
Area of Science:
- Oncology
- Radiation Oncology
Background:
- Merkel cell carcinoma (MCC) is an aggressive skin cancer, often affecting the elderly and head/neck region.
- Surgical resection is standard, but many MCC cases are inoperable, necessitating alternative treatments.
- Radiation therapy is a potential definitive treatment for unresectable MCC.
Observation:
- A case report details an 89-year-old patient with stage IIA MCC of the left cheek.
- The patient received a mild hypofractionated radiation schedule (57 Gy in 3 Gy/fraction, 3 fractions/week).
- Treatment targeted the gross tumor volume.
Findings:
- Complete tumor remission was achieved three months post-irradiation.
- Acute toxicities associated with the radiation therapy were well-tolerated.
- The mild hypofractionated schedule demonstrated efficacy in controlling the MCC.
Implications:
- Mild hypofractionated irradiation presents a feasible treatment option for inoperable MCC.
- This schedule may reduce the burden of frequent hospital visits for elderly patients.
- Further research into hypofractionated radiotherapy for MCC is warranted.

