A gonadal tissue neoplasm is a
tumor
A neoplasm () is a type of abnormal and excessive growth of tissue. The process that occurs to form or produce a neoplasm is called neoplasia. The growth of a neoplasm is uncoordinated with that of the normal surrounding tissue, and persists ...
having any
histology
Histology,
also known as microscopic anatomy or microanatomy, is the branch of biology which studies the microscopic anatomy of biological tissues. Histology is the microscopic counterpart to gross anatomy, which looks at larger structures vis ...
characteristic of cells or tissues giving rise to the
gonad
A gonad, sex gland, or reproductive gland is a mixed gland that produces the gametes and sex hormones of an organism. Female reproductive cells are egg cells, and male reproductive cells are sperm. The male gonad, the testicle, produces sper ...
s. These tissues arise from the
sex cord
In embryogenesis, the sex cords (primitive sex cords, primitive seminiferous cords, or gonadal cords) are structures that develop from the genital ridges that further differentiate based on an embryo's sex. After sexual differentiation, at day 49, ...
and
stromal cells. The tumor may be derived from these tissues, or produce them.
Although the tumor is composed of gonadal tissue, it is not necessarily located in an
ovary
The ovary is an organ in the female reproductive system that produces an ovum. When released, this travels down the fallopian tube into the uterus, where it may become fertilized by a sperm. There is an ovary () found on each side of the body. ...
or
testicle
A testicle or testis (plural testes) is the male reproductive gland or gonad in all bilaterians, including humans. It is homologous to the female ovary. The functions of the testes are to produce both sperm and androgens, primarily testostero ...
.
A gonadal tissue neoplasm should not be confused with a
urogenital neoplasm
A urogenital neoplasm is a tumor of the urogenital system.
Types
Types include:
* Cancer of the female genital organs: ( Cervical cancer, Endometrial cancer, Ovarian cancer, Uterine cancer, Vaginal cancer, Vaginal tumors, Vulvar cancer)
* Cance ...
, though the two topics are often studied together. The embryology of the gonads is only indirectly related to the embryology of the external genitals and urinary system.
See also
*
Gonadoblastoma
A gonadoblastoma is a complex neoplasm composed of a mixture of gonadal elements, such as large primordial germ cells, immature Sertoli cells or granulosa cells of the sex cord, and gonadal stromal cells. Gonadoblastomas are by definition benign, b ...
*
Sex cord–gonadal stromal tumour
Sex cord–gonadal stromal tumour is a group of tumours derived from the stromal component of the ovary and testis, which comprises the granulosa, thecal cells and fibrocytes. In contrast, the epithelial cells originate from the outer epithelial l ...
References
Further reading
*
*
External links
MedGen
Dermal and subcutaneous growths
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