A Case of Mucinous Gastric Adenocarcinoma as Submucosal Tumor / 대한소화기학회지

Gastric mucinous adenocarcinoma is a rare histologic subtype of gastric cancers. It has been reported that the gross or endoscopic finding of mucinous gastric carcinoma is commonly described as a ulcerative or fungating mass in common. There has been controversy over the prognosis and the gross morphology of mucinous gastric adenocarcinoma. We report a case of mucinous gastric adenocarcinoma presenting as a submucosal tumor.

Clinicopathologic characteristics of mucinous gastric adenocarcinoma

There has been considerable controversy over the prognosis of mucinous gastric enocarcinoma (MGC). In this study we analyzed the clinicopathologic fferences between MGC and non-mucinous gastric carcinoma (NMGC). In addition, e relationship between mucin content and other clinicopathologic variables, cluding prognosis in MGC, was also investigated. We reviewed 2118 patients th pathologically-confirmed gastric cancer who underwent gastrectomy at the partment of Surgery, Yonsei University College of Medicine, during the period tween Jan. 1987 and Dec. 1993. Among them, 130 patients had gastric carcinoma th extracellular mucin (MGC) and 1988 patients had gastric carcinoma without tracellular mucin (NMGC). We placed the MGC patients into two groups according mucin content: mucin content involving over 50% of the tumor (dominant type, = 94) and mucin content involving less than 50% of the tumor area (partial pe, n = 36). The results were as follows: MGC was more common in males than GC. The size of the tumor in MGC (mean 5.3 cm) was larger than that of NMGC ean 4.4 cm). The patients with MGC had a higher incidence of Borrmann type IV GC: 16.1%, NMGC: 9.9%), more frequent serosal invasion (MGC: 75.4%, NMGC: .6%), lymph-node metastasis (MGC: 75.4%, NMGC: 50.7%), and peritoneal tastasis (MGC: 10.0%, NMGC: 3.5%) than patients with NMGC. The patients with C were more advanced in stage at the time of diagnosis and had a worse overall -year survival rate (44.9%) than patients with NMGC (54.7%). However, the -year survival rate according to the stage of MGC was similar to that of NMGC. ere were no significant differences between the mucin content and other thologic variables, including prognosis, i.e. similar biologic behavior tween dominant type MGC and partial type MGC. In conclusion, we suggest that C was more frequently diagnosed in advanced stage than NMGC with a poorer ognosis and that it is reasonable to consider the carcinoma with mucin content volving more than 30% of the tumor area as MGC.

Clinicopathologic Characteristica of the Mucinous Gastric Adenocarcinoma

There has been a considerable controversy on the prognosis of the mucinous gastric adenocarcinoma(MGC). In this study we analyzed the clinicopathologic differences between MGC and non-mucinous gastric carcinoma(NMGC). In addition, the relationship between mucin content and other clinicopathologic variables, including prognosis in MGC was examined. We reviewed 2118 patients with pathologically confirmed gastric cancer who had underwent gastrectomy at the department of surgery of Yonsei University College of Medicine, during the period between Jan. 1987 and Dec. 1993. Among them, 130 patients had gastric cancer with extracellular mucin(MGC) and 1988 patients had gastric carcinoma without extracellular mucin(NMGC). We studied the MGC patients into two groups according to mucin content: mucin content involving over 50% of the tumor(dominant type, n=94) and mucin content involving less than 50% of the tumor area(partial type, n=36). The results are as follows: The MGC was more common in male then NMGC. The size of tumor in MGC was larger than that of NMGC. The patients with MGC had higher incidence of Borrmann type IV, more frequent serosal invasion, lymph nodes metastasis and peritoneal metastasis than the patients with NMGC. The patients with MGC had more advanced stage at the time of diagnosis and worse overall 5-year survival rate than the patients with NMGC. But the 5-year survival rate according to the stage of MGC was similar to that of NMGC. There were no significant differences between the mucin content and other pathologic variables including prognosis. So we suggested that MGC has worse prognosis than NMGC and it is reasonable to consider the carcinoma with mucin content involving less than 50% of the tumor area as MGC.