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Diagnosis: Types of Tumors

Epithelial Cancer: Mucinous carcinoma
Mucinous carcinomas appear to comprise approximately 3.6% of ovarian epithelial neoplasms. Mucinous carcinomas occur in women in the fourth to seventh decades. The mean age is 54 years. The clinical presentation is similar to that of benign mucinous neoplasms, inasmuch as the majority of cases are stage I (see Staging). Rather, as these tumors can be quite large, the clinical presentation is generally that of a large pelvic or abdominal mass and abdominal distention. The overall prognosis of patients with mucinous carcinoma is better than that for serous carcinoma because a high proportion of patients present in stage I. Nonetheless, despite the differing clinical and pathologic features of ovarian serous and mucinous carcinomas, their behavior stage for stage is similar. Recurrence and mortality in stage I mucinous carcinoma occurs in 8-12% of cases, similar to well-staged stage I serous carcinomas. Advanced stage mucinous carcinoma (FIGO III and IV) is uniformly fatal, as is serous carcinoma of advanced stage. Limited data are available on FIGO stage II tumors, as only 10% of patients are in stage II. Similarly, little data are available on high grade stage I mucinous carcinomas. Occult advanced stage disease is rare compared to serous carcinoma.

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