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Deep Learning Technology: Sebastian Arnold, Betty van Aken, Paul Grundmann, Felix A. Gers and Alexander Löser. Learning Contextualized Document Representations for Healthcare Answer Retrieval. The Web Conference 2020 (WWW'20)
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The hallmark sign of urethral stricture is a weak urinary stream. Other symptoms include:
- Splaying of the urinary stream
- Urinary frequency
- Urinary urgency
- Straining to urinate
- Pain during urination
- Urinary tract infection
- Prostatitis
- Inability to completely empty the bladder.
Some patients with severe urethral strictures are completely unable to urinate. This is referred to as acute urinary retention, and is a medical emergency. Hydronephrosis and renal failure may also occur.
PPSH usually consists of:
- a phallus midway in size between penis and clitoris,
- a chordee tethering it to the perineum,
- a urethral opening usually on the perineum (the hypospadias),
- and an incompletely closed urogenital opening, which resembles a small and shallow vagina.
Testes are often palpable in the scrotum or inguinal canals, and the karyotype is XY. In most cases there are no internal female structures such as a uterus or other Müllerian duct derivatives.
MAGI includes infections (bacterial, viral, fungal etc) involving one or more of the following male genital organs or tracts:
- seminal vesicles (seminal vesiculitis)
- prostate gland (prostatitis)
- vas deferens
- epididymis (epididymitis)
- testicles (orchitis)
- urethra (urethritis)
- Cowper's glands
Urethral strictures most commonly result from injury, urethral instrumentation, infection, non-infectious inflammatory conditions of the urethra, and after prior hypospadias surgery. Less common causes include congenital urethral strictures and those resulting from malignancy.
Urethral strictures after blunt trauma can generally be divided into two sub-types;
- Pelvic fracture-associated urethral disruption occurs in as many as 15% of severe pelvic fractures. These injuries are typically managed with suprapubic tube placement and delayed urethroplasty 3 months later. Early endoscopic realignment may be used in select cases instead of a suprapubic tube, but these patients should be monitored closely as vast majority of them will require urethroplasty.
- Blunt trauma to the perineum compresses the bulbar urethra against the pubic symphysis, causing a "crush" injury. These patients are typically treated with suprapubic tube and delayed urethroplasty.
Other specific causes of urethral stricture include:
- Instrumentation (e.g., after transurethral resection of prostate, transurethral resection of bladder tumor, or endoscopic kidney surgery)
- Infection (typically with Gonorrhea)
- Lichen sclerosus
- Surgery to address hypospadias can result in a delayed urethral stricture, even decades after the original surgery.
Most cases involve a small and bifid penis, which requires surgical closure soon after birth, often including a reconstruction of the urethra. Where it is part of a larger exstrophy, not only the urethra but also the bladder (bladder exstrophy) or the entire perineum (cloacal exstrophy) are open and exposed on birth, requiring closure.
A prostatic stent is a stent used to keep open the male urethra and allow the passing of urine in cases of prostatic obstruction and lower urinary tract symptoms (LUTS). Prostatic obstruction is a common condition with a variety of causes. Benign prostatic hyperplasia (BPH) is the most common cause, but obstruction may also occur acutely after treatment for BPH such as transurethral needle ablation of the prostate (TUNA), transurethral resection of the prostate (TURP), transurethral microwave thermotherapy (TUMT), prostate cancer or after radiation therapy.
Despite the similarity of name, an epispadias is not a type of hypospadias, and involves a problem with a different set of embryologic processes.
Women can also have this type of congenital malformation. Epispadias of the female may occur when the urethra develops too far anteriorly, exiting in the clitoris or even more forward. For females, this may not cause difficulty in urination but may cause problems with sexual satisfaction. Frequently, the clitoris is bifurcated at the site of urethral exit, and therefore clitoral sensation is less intense during sexual intercourse due to frequent stimulation during urination. However, with proper stimulation, using either manual or positional techniques, clitoral orgasm is definitely possible.
As infection has a negative impact on the secretory function of the accessory glands, findings that could indicate the presence of MAGI include:
- signs of inflammation in a semen analysis (leukocytes ≥ 1x10/mL and/or elastase ≥ 230 ng/mL)
- low semen volume
- elevated semen pH
- low levels of alpha-glucosidase, fructose and zinc
It is considered a form of 5-alpha-reductase deficiency involving SRD5A2.
A bifid penis (or double penis) is a rare congenital defect where two genital tubercles develop.
Historically, males born with a bifid penis often underwent sex reassignment surgery, due to the difficulty of penile reconstruction. They were raised as girls, and often had reconstructive surgery to make them phenotypically female, coupled with female hormone replacement therapy. However, in recent years, this practice has fallen under heavy scrutiny due to both a high frequency of sexual dysfunction in gender converted children, and more advanced penile reconstruction techniques.
Many male marsupials naturally have a bifid penis, with left and right prongs that they insert into multiple vaginal canals simultaneously.
Anal stricture or anal stenosis is a narrowing of the anal canal. It can be caused by a number of surgical procedures including: hemorrhoid removal and following anorectal wart treatment.
Bulbar urethral necrosis is a problem that can occur after a pelvic fracture associated urethral distraction defect (PFUDD).
Aphallia is a congenital malformation in which the phallus (penis or clitoris) is absent. It is the female counterpart of penile agenesis and testicular agenesis. The word is derived from the Greek "a-" for "not", and "phallos" for "penis". It is classified as an intersex condition.
Urethral meatal stenosis or urethral stricture is a narrowing (stenosis) of the opening of the urethra at the external meatus , thus constricting the opening through which urine leaves the body from the urinary bladder.
Pelvic organ prolapse (POP) is characterized by descent of pelvic organs from their normal positions. In women, the condition usually occurs when the pelvic floor collapses after gynecological cancer treatment, childbirth or heavy lifting.
In men, it may occur after the prostrate gland is removed. The injury occurs to fascia membranes and other connective structures that can result in cystocele, rectocele or both. Treatment can involve dietary and lifestyle changes, physical therapy, or surgery.
The protection provided by the foreskin for the glans penis and meatus has been recognized since 1915. In the absence of the foreskin the meatus is exposed to mechanical and chemical irritation from ammoniacal diaper (nappie) that produces blister formation and ulceration of the urethral opening, which eventually gives rise to meatal stenosis (a narrowing of the opening). Meatal stenosis may also be caused by ischemia resulting from damage to the frenular artery during circumcision.
There are two types of prostatic stent: temporary and permanent.
Although a permanent prostatic stent is not a medical treatment, it falls under the classification of a surgical procedure. Placement of a permanent prostatic stent is carried out as an outpatient treatment under local, topical or spinal anesthesia and usually takes about 15–30 minutes.
A temporary prostatic stent can be inserted in a similar manner to a Foley catheter, requiring only topical anesthesia.
A male genital disease is a condition that affects the male reproductive system. An example is orchitis.
non infection disease
Pelvic organ prolapses are graded either via the Baden-Walker System, Shaw's System, or the Pelvic Organ Prolapse Quantification (POP-Q) System.
Hypospadias is usually diagnosed in the newborn nursery by the characteristic appearance of the penis. The urinary opening (“meatus”) is lower than normal, and most children have only partial development of the foreskin, lacking the normal covering for the glans on the underside. The abnormal “hooded” foreskin calls attention to the condition. However, not all newborns with partial foreskin development have hypospadias, as some have a normal urinary opening with a hooded foreskin, which is called “chordee without hypospadias”.
Megameatus with intact prepuce variant of hypospadias occurs when the foreskin is normal and the hypospadias is concealed. The condition is discovered during newborn circumcision or later in childhood when the foreskin begins to retract. A newborn with normal-appearing foreskin and a straight penis who is discovered to have hypospadias after a circumcision was started can have circumcision completed without worry for jeopardizing future hypospadias repair. Hypospadias is almost never discovered after a circumcision.
Hypospadias is a congenital disorder of the urethra where the urinary opening is not at the usual location on the head of the penis. It is the second-most common birth abnormality of the male reproductive system, affecting about one of every 250 males at birth. In roughly 90% of cases, the opening (meatus) is on or near the head of the penis (glans), referred to as distal hypospadias, while the remainder have proximal hypospadias with a meatus near or within the scrotum. Shiny tissue seen extending from the meatus to the tip of the glans, which would have made the urinary channel, is referred to as the urethral plate.
In most cases, the foreskin is also underdeveloped and does not wrap completely around the penis, leaving the underside of the glans penis uncovered. Also, a downward bending of the penis, commonly referred to as chordee, may occur. This is found in 10% of distal hypospadias and 50% of proximal hypospadias at the time of surgery. The scrotum may be higher than usual to either side of the penis, called penoscrotal transposition, adding to the abnormal overall appearance.
Hypospadias is thought to result from failure of the urinary channel to completely tubularize to the end of the penis; the cause is not known. Most often, it is the only abnormal finding, although in about 10% of cases, hypospadias may be part of a syndrome with multiple abnormalities.
The most common associated defect is an undescended testicle, which has been reported in around 3% of infants with distal hypospadias and 10% of those having proximal hypospadias. The combination of hypospadias and an undescended testicle sometimes indicates a disorder of sexual differentiation, and so additional testing may be recommended. Otherwise no blood tests or X-rays are routinely needed in newborns with hypospadias.
Hypospadias can be a symptom or indication of an intersex condition but the presence of hypospadias alone is not enough to classify as intersex. In most cases, hypospadias is not associated with any condition.
Uterine prolapse is a form of female genital prolapse. It is also called pelvic organ prolapse or prolapse of the uterus (womb).
Risk factors for uterine prolapse include pregnancy, childbirth, chronic increases in intra-abdominal pressure such as lifting, coughing or straining, connective tissue conditions, and damage to or weakness of the muscles.
Treatment may be conservative or surgical and should be based upon patient symptoms and preference.
Patients with erectile dysfunction (ED) and PFUDD or patients with PFUDD and traumatic disruption of the dorsal arteries are susceptible to bulbar urethral necrosis. These patients need tubularized substitution urethroplasty, which is replacement of the bulbar urethra with a various number of tubularized flaps ranging from scrotal skin to sigmoid colon (and others).
Aphallia has no known cause. It is not linked to deficient hormone amounts or action, but rather to a failure of the fetal genital tubercle to form between 3 and 6 weeks after conception. The urethra of an affected child opens on the perineum.
Retrograde ejaculation occurs when semen, which would, in most cases, be ejaculated via the urethra, is redirected to the urinary bladder. Normally, the sphincter of the bladder contracts before ejaculation forcing the semen to exit via the urethra, the path of least resistance. When the bladder sphincter does not function properly, retrograde ejaculation may occur. It can also be induced deliberately by a male as a primitive form of male birth control (known as "coitus saxonicus") or as part of certain alternative medicine practices.