Nasal Alar and Scalp Metastases From Lung Carcinoma: A Case Report and Literature Review.

Both nasal alar and scalp metastases from lung carcinoma are exceedingly rare. Herein, we report a case of an elderly male smoker who had left lung carcinoma and underwent radical resection. Seven months later, masses began to appear on his nasal alar and parietal scalp which gradually increased in size. The nasal computed tomography and head magnetic resonance imaging scan revealed a dense soft tissue shadow in the right nasal alar and nasal cavity, as well as a soft tissue nodule in the middle of the parietal scalp. A biopsy was performed and immunohistochemistry suggested poorly differentiated metastatic carcinoma that was consistent with the characteristics of primary lung carcinoma and supported the diagnosis of nasal alar and scalp metastases. Then, he received a combined treatment of Albumin paclitaxel and Xindirizumab. However, he passed away 3 months later. In addition to this case, we also review the clinical features of nose and/or scalp metastases from lung carcinoma based on previously reported cases as well as this case.