PMID: 11320728Apr 26, 2001Paper

Ovarian Leydig cell tumor

Medicinski pregled
S VujovićM Drezgić

Abstract

Leydig cell tumors are sex cord-stromal tumors with sexual steroid production (predominantly testosterone). They account for less than 0.6% of ovarian neoplasms and mostly appear at the age of 28. It is a solid yellowish nodular tumor, less than 5 cm in diameter. It consists of polygonal Leydig cells, eosinophillic cytoplasm with lipid vacuole and lipochrome pigments. Nuclei are oval, pleomorphic with rare nucleoli. Hyperthecosis is around the tumor. Signs and symptoms depend on age of women and testosterone levels. Women complain about hirsutism, hoarseness, muscular hypertrophy, increased libido, clitoromegaly, temporal hair loss and menstrual disturbances. Basal hormone analysis reveals extremely high testosterone levels, mildly high androstenedione and 17 OH progesterone, and suppressed follicle stimulating hormone and luteinizing hormone. Estradiol, dehydroepiandrosterone sulfate and other hormones are normal. Dexamethasone screening test decreases dehydroepioandrosterone sulfate and androstenedion, whereas testosterone levels are only partly suppressed. Human choriogonadotropin test is clearly stimulatory for testosterone. Suppressed gonadotropin levels do not respond to luteinizing hormone releasing hormone stimulation. ...Continue Reading

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.