2018 Volume 32 Issue 3 Pages 245-248
An 86-year-old woman noted a subcutaneous mass in the left axilla 2 months before presentation. A biopsy of an enlarged axillary lymph node showed proliferation of CK20-positive basophilic small tumor cells. Computed tomography of the chest and abdomen detected multiple lymph nodes in the left axilla alone ; other than in the left axilla, no lesions were observed on fluorodeoxyglucose-positron emission tomography. We diagnosed lymph node metastasis in Merkel cell carcinoma without known cutaneous primary. The patient underwent axillary lymph node dissection and received postoperative radiation therapy. As of 13 months after surgery, no recurrence or metastasis has occurred.[Skin Cancer (Japan) 2017 ; 32 : 245-248]
