Abstract
Ovarian malignant germ cell tumors (OMGCT) represent less than 10% of all ovarian tumors. Dysgerminoma is the most common malignant primitive germ cell tumor in young women, known for its curability and low propensity to invade and metastasize when diagnosed early. Herein, we report an unusual type of ovarian dysgerminoma (OD) metastasis with a brief review of the literature, lacking similar reported cases. To our knowledge, although there are several case reports of dysgerminoma metastases with variable anatomic location and presentation, vaginal metastasis has not been previously described. The local or systemic relapse together with local and distant metastasis is considered as an independent predictor of poor survival in patients with OD. In light of the absence of mutations status, our patient successfully responded to therapy. Currently, the patient remains in clinical remission. A specific follow-up plan is ongoing knowing that ovarian dysgerminomas tend to recur most often in the first 2–3 years after treatment.
Highlights
Masafumi KoshiyamaOvarian dysgerminoma (OD) is a malignant tumor originating from the ovarian primordial germ cells
According to a survey performed in the United States comprising 1262 cases of ovarian malignant germ cell tumors (OMGCTs) registered from 1973 to 2002, the age-adjusted incidence of ovarian dysgerminoma per 100,000 women-years was 0.109 [4]
We found an increase in the serum level of lactate dehydrogenase (LDH) of 485U/L
Summary
Ovarian dysgerminoma (OD) is a malignant tumor originating from the ovarian primordial germ cells. The etiology of OD is not well established. Health Organization (WHO)as tumors composed of primitive germ cells that do not have a specific pattern of differentiation [1,2]. Of all ovarian malignancies and is about half of malignant ovarian germ cell neoplasms (33–37%) [1,2,3,4,5]. According to a survey performed in the United States comprising 1262 cases of ovarian malignant germ cell tumors (OMGCTs) registered from 1973 to 2002, the age-adjusted incidence of ovarian dysgerminoma per 100,000 women-years was 0.109 [4]
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