Primary squamous cell carcinoma of the stomach.

Primary squamous cell carcinoma (SCC) of the stomach is extremely rare; only 32 cases are found in the Japanese literature. The pathogenesis of this neoplasm remains obscure and controversial. Furthermore, the optimal treatment, including adjuvant chemotherapy, remains unclear. We report herein a case of SCC of the stomach in a 70-year-old male with amazing effectiveness of neoadjuvant chemotherapy, low-dose FP chemotherapy. To our knowledge, no case of this disease has ever been reported that was given neoadjuvant chemotherapy and histologically showed its effectiveness. Our case demonstrated a striking effectiveness of chemotherapy in the neoplasm both radiologically and histologically.