Reproductive (M)

Azoospermia is the medical condition of a man whose semen contains no sperm. It is…

Chancroid is a bacterial sexually transmitted infection characterized by painful sores on…

Fournier gangrene is a type of necrotizing fasciitis or gangrene affecting the external…

A hydrocele testis is an accumulation of clear fluid within the cavum vaginale, the…

Terms oligospermia, oligozoospermia, and low sperm count refer to semen with a low…

Penile cancer, or penile carcinoma, is a rare cancer that develops in the skin or tissues…

5α-Reductase 2 deficiency (5αR2D) is an autosomal recessive condition caused by mutations…

Androgen insensitivity syndrome (AIS) is a condition involving the inability to respond…

Gonadal agenesis is a rare condition where an individual lacks both gonads.

Balanitis is inflammation of the glans penis. Balanoposthitis is the proper term when the…

Epididymitis is a medical condition characterized by inflammation of the epididymis, a…

Epispadias is a common malformation in fetal development, most commonly noticed in…

Erectile dysfunction (ED), also referred to as impotence, is a form of sexual dysfunction…

Gynecomastia is the non-cancerous enlargement of one or both breasts in men due to the…

A hematocele is a collections of blood in a body cavity or potential space. The term most…

Hematospermia is the presence of blood in the ejaculate. It is most often a benign…

Klinefelter syndrome (KS), also known as 47,XXY, is a chromosome anomaly. Subjects…

Late-onset hypogonadism (LOH) or testosterone deficiency syndrome (TDS) is a condition in…

Leydig cell tumour, also Leydig cell tumor, (testicular) interstitial cell tumour and…

Hypogonadism means diminished functional activity of the gonads—the testicles or the…

Male breast cancer (MBC) is a cancer in males that originates in their breasts. Males…

Male infertility refers to a sexually mature male's inability to impregnate a fertile…

A micropenis or microphallus is an unusually small penis. A common criterion is a dorsal…

Orchitis is inflammation of the testicles. It can also involve swelling, pains, and…

Paraphimosis is an uncommon medical condition in which the foreskin of a penis becomes…

Penile fracture is rupture of one or both of the tunica albuginea, the fibrous coverings…

Peyronie's disease (PD) is a benign, acquired penile connective tissue disease…

Phimosis is a condition in which the foreskin of the penis cannot stretch to allow it to…

Priapism is a condition in which a penis remains erect for hours in the absence of…

Prostate cancer is the uncontrolled growth of cells in the prostate, a gland in the male…

High-grade prostatic intraepithelial neoplasia (HGPIN) is an abnormality of prostatic…

Retrograde ejaculation is a male genital disorder that occurs when semen which would be…

A seminoma is a germ cell tumor of the testicle or, more rarely, the mediastinum or other…

Sertoli cell-only syndrome (SCOS), also known as germ cell aplasia, is defined by…

A sarcoma is a rare type of cancer that arises from cells of mesenchymal origin.…

Spermatocele is a fluid-filled cyst that develops in the epididymis. The fluid is usually…

Testicular cancer is cancer that develops in the testicles, a part of the male…

Testicular torsion occurs when the spermatic cord twists, cutting off the blood supply to…

Cryptorchidism, also known as undescended testis (UDT), is the failure of one or both…

A varicocele is an abnormal enlargement of the pampiniform venous plexus in the scrotum.…