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Ovarian tumors by incidence and risk of ovarian cancer, with mature cystic teratoma at bottom and immature teratoma at right. [ 55 ] Embryonal teratomas most commonly occur in the sacrococcygeal region; sacrococcygeal teratoma is the single most common tumor found in newborn humans.
A teratoma is a tumor of germ cell origin, containing tissues from more than one germ cell line, [2] [3] [4] It can be ovarian or testicular in its origin. [4] and are almost always benign. [5] An immature teratoma is thus a very rare tumor, representing 1% of all teratomas, 1% of all ovarian cancers, and 35.6% of malignant ovarian germ cell ...
A fetus in fetu can be considered alive, but only in the sense that its component tissues have not yet died or been eliminated. Thus, the life of a fetus in fetu is akin to that of a tumor in that its cells remain viable by way of normal metabolic activity.
A cystic teratoma with a small Rokitansky nodule — region of thickened cyst wall (bottom part of image). In gynecology , a Rokitansky nodule is a mass or lump in an ovarian teratomatous cyst . [ 1 ]
Ovarian germ cell tumors (OGCTs) are heterogeneous tumors that are derived from the primitive germ cells of the embryonic gonad, which accounts for about 2.6% of all ovarian malignancies. [1] There are four main types of OGCTs, namely dysgerminomas , yolk sac tumor , teratoma , and choriocarcinoma .
Teratology is the study of abnormalities of physiological development in organisms during their life span. It is a sub-discipline in medical genetics which focuses on the classification of congenital abnormalities in dysmorphology caused by teratogens and also in pharmacology and toxicology.
Gonadal dysgenesis; Specialty: Medical genetics : Diagnostic method: pelvic examination (checking for maturation of external internal genitals), general examination (looking for secondary sexual characters), chromosome karyotyping, hormone levels like FSH, LH (which are increased in case of purely XX dysgenesis), family history
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