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An immature teratoma is a teratoma that contains anaplastic immature elements, and is often synonymous with malignant teratoma. [1] 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.
Immature teratomas contain immature or embryonic tissue which significantly differentiates them from mature teratomas as they carry dermoid cysts. [5] It is commonly observed in 15 to 19-year-old women and rarely in women after menopause. [6] Immature teratomas are characterized with a diameter of 14–25 cm, encapsulated mass, cystic areas ...
[4] [9] Most ovarian teratomas are mature. [10] In adults, testicular teratomas are generally cancerous. [11] Definitive diagnosis is based on a tissue biopsy. [2] Treatment of coccyx, testicular, and ovarian teratomas is generally by surgery. [5] [6] [12] Testicular and immature ovarian teratomas are also frequently treated with chemotherapy ...
Mature cystic teratoma: 46.0%: 0.17% to 2% [6] Cystic, with elements of all 3 germ layers (endoderm, mesoderm and ectoderm). [7] Hair follicles. Immature teratoma: 2.5%: 100%: A teratoma that contains anaplastic immature elements, and is often synonymous with malignant teratoma. [8] Other germ cell tumors 3.0%
pelvis, particularly sacrococcygeal teratoma; In females, GCTs account for 30% of ovarian tumors, but only 1 to 3% of ovarian cancers in North America. In younger women, they are more common, thus in patients under the age of 21, 60% of ovarian tumors are of the germ-cell type, and up to one-third are malignant.
A dermoid cyst is a teratoma of a cystic nature that contains an array of developmentally mature, solid tissues. It frequently consists of skin, hair follicles, and sweat glands, while other commonly found components include clumps of long hair, pockets of sebum, blood, fat, bone, nail, teeth, eyes, cartilage, and thyroid tissue.
The ovarian disease has two forms, juvenile and adult, both characterized by indolent growth, [1] and therefore has high recovery rates. [ 2 ] [ 3 ] The staging system for these tumours is the same as for epithelial tumours and most present as stage I. [ 4 ] The peak age at which they occur is 50–55 years, but they may occur at any age.
Dysgerminoma is the most common type of malignant germ-cell ovarian cancer. Dysgerminoma usually occurs in adolescence and early adult life; about 5% occur in prepubertal children. Dysgerminoma is extremely rare after age 50. It occurs in both ovaries in 10% of patients and, in a further 10%, a microscopic tumor is in the other ovary. [citation ...