Skeletal muscle metastasis of prostate cancer is a very rare phenomenon that has only been described in limited case reports.In this study, we present a case of neuroendocrine prostate cancer AEG BS831410KM ProCombi Steam Oven with muscle metastasis, a histological subtype associated with a grim prognosis.This case illustrates the potential efficacy of urgent surgical resection of the metastatic muscle mass, followed by adjuvant radiation therapy, as a suitable management strategy for this Flat Washer condition.However, a comprehensive understanding of the biological characteristics of neuroendocrine prostate cancer is imperative in our fight against this lethal form of the disease and in the prevention of metastatic spread.