Primary Signet Ring Cell Mucinous Ovarian Carcinoma: A Case Report and Literature Review

A 24-year-old female patient presented with an extremely rare primary signet cell carcinoma of the right ovary 1 year after surgery for a mucinous borderline tumour of the left ovary. Relaparotomy was carried out with right adnexectomy, appendectomy and partial omentectomy. Surgery was followed by 6 courses of paclitaxel/carboplatinum chemotherapy. After an initial response, the patient again developed increasing ascites. The patient was transferred to our hospital and a re-relaparotomy was carried out, completing the operation. After 3 courses of pegylated doxorubicin/trabectedin, the clinical course showed a positive response and a decline of the tumour marker CEA in peripheral blood. After 5 months, ascites developed in the retroperitoneum so that the chemotherapy had to be changed. In spite of a positive response with the new chemotherapy, the patient died of a very rare pulmonary complication after 1 month within 2 days.