Conclusion Expression of mucin MUC5AC declined is primary ovarian tumor.MUC5AC may be useful in differential diagnosis of metastatic ovarian tumor originated from gastric origin.

• 结论粘蛋白MUC5AC在原发性肿瘤中呈下调表达，MUC5AC对来源于胃的转移性卵巢肿瘤有鉴别意义。