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The tumor may secrete human placental lactogen, [2] and result in a false-positive pregnancy test. [3] A placental site trophoblastic tumor is a monophasic neoplasm of the implantation site intermediate trophoblast, and usually a benign lesion, which comprises less than 2% of all gestational trophoblastic proliferations. Preceding conditions ...
Here, first a fertilised egg implants into the uterus, but some cells around the fetus (the chorionic villi) do not develop properly. The pregnancy is not viable, and the normal pregnancy process turns into a benign tumour. There are two subtypes of hydatidiform mole: complete hydatidiform mole, and partial hydatidiform mole. [citation needed]
A luteoma is a tumor that occurs in the ovaries during pregnancy. It is associated with an increase of sex hormones, primarily progesterone and testosterone. [1] [2] The size of the tumor can range from 1 to 25 cm in diameter, but is usually 6 to 10 cm in diameter [3] and can grow throughout the duration of the pregnancy. [4]
The tumor is caused when the germ cells in the ovaries begin divide uncontrollably and become malignant which are characterized with their less organized nuclei and unclearly defined border. [1] Another potential etiology is the dysfunctioning of the tumor suppressor gene , TRC8/RNF139, or even karyotypic abnormalities after close molecular ...
Choriocarcinoma is a malignant, trophoblastic [1] cancer, usually of the placenta. It is characterized by early hematogenous spread to the lungs. It belongs to the malignant end of the spectrum in gestational trophoblastic disease (GTD). It is also classified as a germ cell tumor and may arise in the testis or ovary.
A teratoma with malignant transformation is a very rare form of teratoma that may contain elements of somatic malignant tumors such as leukemia, carcinoma, or sarcoma. [35] Of 641 children with pure teratoma, nine developed TMT: [47] five carcinoma, two glioma, and two embryonal carcinoma (here, these last are classified among germ cell tumors).
A teratoma that contains anaplastic immature elements, and is often synonymous with malignant teratoma. [8] Other germ cell tumors 3.0%: Others mainly include dysgerminoma, yolk sac tumor, struma ovarii and squamous cell carcinoma arising from a dermoid cyst, and malignant mixed germ cell tumor. [5] Surface epithelial-stromal tumor Serous tumor ...
Ovarian borderline tumors, sometimes called low malignant potential (LMP) ovarian tumors, have some benign and some malignant features. [29] LMP tumors make up approximately 10–15% of all ovarian tumors. [31] [70] They develop earlier than epithelial ovarian cancer, around the age of 40–49. They typically do not have extensive invasion; 10% ...