It consists of an outer layer of thin, wrinkled skin over a layer of muscular tissue.
Swelling of the scrotum may be due to an inguinal hernia, swollen testis, hydrocele, or fluid accumulation due to heart failure.
It consists of an outer layer of thin, wrinkled skin over a layer of muscular tissue.
Swelling of the scrotum may be due to an inguinal hernia, swollen testis, hydrocele, or fluid accumulation due to heart failure.
Filarial elephantiasis Wuchereria bancrofti and Brugia malayi are conveyed to humans by a mosquito bite. Resultant lymphatic obstruction gives rise to enlargement and dis?guration, with thickening of the skin (resembling that of an elephant) in one or both lower limbs and occasionally genitalia (involving particularly the SCROTUM). By the time the condition is recognised, lymphatic damage is irreversible. However, if evidence of continuing activity exists, a course of diethylcarbamazine should be administered (see FILARIASIS). Relief can be obtained by using elastic bandaging, massage, rest, and elevation of the affected limb. Surgery is sometimes indicated. For prevention, destruction of mosquitoes is important.... elephantiasis
Each testis contains seminiferous tubules that produce sperm. Cells between the seminiferous tubules produce testosterone.
Each testis is suspended by the spermatic cord, composed of the vas deferens, blood vessels, and nerves. (See also testis, undescended.)... testis
Indicated: antibacterials. Pulsatilla (American Dispensary)
Alternatives. Teas. Cornsilk, Marshmallow leaves.
Decoction. Marshmallow root.
Tablets/capsules. Pulsatilla, Saw Palmetto. Echinacea. Goldenseal.
Powders. Formula. Equal parts, Saw Palmetto, Pulsatilla, Black Willow, pinch of Cayenne. Dose: 500mg (two 00 capsules or one-third teaspoon) 3-4 times daily.
Liquid extracts. Alternatives. (1) Formula: equal parts: Black Willow, Echinacea, Pulsatilla. Dose: 30- 60 drops. (2) Echinacea 2; Saw Palmetto 2; Thuja 1. Dose: 30-60 drops. 3-4 times daily.
Topical. Scrotal ice packs. Cold Dogwood poultice. ... epididymitis
This makes the penis erect and ready for insertion into the woman’s vagina in sexual intercourse. The end of the penis, the glans, is covered by a loose fold of skin – the foreskin or PREPUCE – which retracts when the organ is erect. The foreskin is sometimes removed for cultural or medical reasons.
A common congenital disorder of the penis is HYPOSPADIAS, in which the urethra opens somewhere along the under side; it can be repaired surgically. BALANITIS is in?ammation of the glans and foreskin. (See also REPRODUCTIVE SYSTEM; EJACULATION; IMPOTENCE; PRIAPISM.)... penis
Typically the patient complains of widespread severe itching, worse when the body is warm after a bath or in bed. Burrows are visible as wavy black lines 3–5 mm long in the skin of the hands, wrists or sides of the feet. The intensity of the rash depends on the immune response. Papules, pustules, crusts and excoriations are seen on the hands and there may be a widespread eczematous (see DERMATITIS) or urticarial (see URTICARIA) rash elsewhere. Papules or even nodules on the PENIS and SCROTUM are characteristic. In infants, burrows occur on the palms and soles. Diminished immune response in old age, DOWN’S (DOWN) SYNDROME, etc. lead to a type of scabies which is less itching and more scaly. Rarely, absence of immune response causes a mite-saturated, generalised scaly dermatitis (Norwegian scabies). Admission of such a patient to hospital may result in an outbreak of scabies in other patients, sta? and visitors caused by mite-infested airborne scale.
Treatment MALATHION 0·5 per cent aqueous lotion, or PERMETHRIN 5 per cent cream, applied to the whole body, except the head, for 24 hours and then washed o? cures the infection. In infants the head and neck should be included. The secondary eruption may take 2– 3 weeks to settle completely and 10 per cent crotamiton cream is used during this period. It is essential that all intimate contacts be treated simultaneously. FOMITES need not be treated.... scabies
Structure of muscle Skeletal or voluntary muscle forms the bulk of the body’s musculature and contains more than 600 such muscles. They are classi?ed according to their methods of action. A ?exor muscle closes a joint, an extensor opens it; an abductor moves a body part outwards, an adductor moves it in; a depressor lowers a body part and an elevator raises it; while a constrictor (sphincter) muscle surrounds an ori?ce, closing and opening it. Each muscle is enclosed in a sheath of ?brous tissue, known as fascia or epimysium, and, from this, partitions of ?brous tissue, known as perimysium, run into the substance of the muscle, dividing it up into small bundles. Each of these bundles consists in turn of a collection of ?bres, which form the units of the muscle. Each ?bre is about 50 micrometres in thickness and ranges in length from a few millimetres to 300 millimetres. If the ?bre is cut across and examined under a high-powered microscope, it is seen to be further divided into ?brils. Each ?bre is enclosed in an elastic sheath of its own, which allows it to lengthen and shorten, and is known as the sarcolemma. Within the sarcolemma lie numerous nuclei belonging to the muscle ?bre, which was originally developed from a simple cell. To the sarcolemma, at either end, is attached a minute bundle of connective-tissue ?bres which unites the muscle ?bre to its neighbours, or to one of the connective-tissue partitions in the muscle, and by means of these connections the ?bre affects muscle contraction. Between the muscle ?bres, and enveloped in a sheath of connective tissue, lie here and there special structures known as muscle-spindles. Each of these contains thin muscle ?bres, numerous nuclei, and the endings of sensory nerves. (See TOUCH.) The heart muscle comprises short ?bres which communicate with their neighbours via short branches and have no sarcolemma.
Plain or unstriped muscle is found in the following positions: the inner and middle coats of the STOMACH and INTESTINE; the ureters (see URETER) and URINARY BLADDER; the TRACHEA and bronchial tubes; the ducts of glands; the GALL-BLADDER; the UTERUS and FALLOPIAN TUBES; the middle coat of the blood and lymph vessels; the iris and ciliary muscle of the EYE; the dartos muscle of the SCROTUM; and in association with the various glands and hairs in the SKIN. The ?bres are very much smaller than those of striped muscle, although they vary greatly in size. Each has one or more oval nuclei and a delicate sheath of sarcolemma enveloping it. The ?bres are grouped in bundles, much as are the striped ?bres, but they adhere to one another by cement material, not by the tendon bundles found in voluntary muscle.
Development of muscle All the muscles of the developing individual arise from the central layer (mesoderm) of the EMBRYO, each ?bre taking origin from a single cell. Later on in life, muscles have the power both of increasing in size – as the result of use, for example, in athletes – and also of healing, after parts of them have been destroyed by injury. An example of the great extent to which unstriped muscle can develop to meet the demands made on it is the uterus, whose muscular wall develops so much during pregnancy that the organ increases from the weight of 30–40 g (1–1••• oz.) to a weight of around 1 kg (2 lb.), decreasing again to its former small size in the course of a month after childbirth.
Physiology of contraction A muscle is an elaborate chemico-physical system for producing heat and mechanical work. The total energy liberated by a contracting muscle can be exactly measured. From 25–30 per cent of the total energy expended is used in mechanical work. The heat of contracting muscle makes an important contribution to the maintenance of the heat of the body. (See also MYOGLOBIN.)
The energy of muscular contraction is derived from a complicated series of chemical reactions. Complex substances are broken down and built up again, supplying each other with energy for this purpose. The ?rst reaction is the breakdown of adenyl-pyrophosphate into phosphoric acid and adenylic acid (derived from nucleic acid); this supplies the immediate energy for contraction. Next phosphocreatine breaks down into creatine and phosphoric acid, giving energy for the resynthesis of adenyl-pyrophosphate. Creatine is a normal nitrogenous constituent of muscle. Then glycogen through the intermediary stage of sugar bound to phosphate breaks down into lactic acid to supply energy for the resynthesis of phosphocreatine. Finally part of the lactic acid is oxidised to supply energy for building up the rest of the lactic acid into glycogen again. If there is not enough oxygen, lactic acid accumulates and fatigue results.
All of the chemical changes are mediated by the action of several enzymes (see ENZYME).
Involuntary muscle has several peculiarities of contraction. In the heart, rhythmicality is an important feature – one beat appearing to be, in a sense, the cause of the next beat. Tonus is a character of all muscle, but particularly of unstriped muscle in some localities, as in the walls of arteries.
Fatigue occurs when a muscle is made to act for some time and is due to the accumulation of waste products, especially sarcolactic acid (see LACTIC ACID). These substances affect the end-plates of the nerve controlling the muscle, and so prevent destructive overaction of the muscle. As they are rapidly swept away by the blood, the muscle, after a rest (and particularly if the rest is accompanied by massage or by gentle contractions to quicken the circulation) recovers rapidly from the fatigue. Muscular activity over the whole body causes prolonged fatigue which is remedied by rest to allow for metabolic balance to be re-established.... muscle
Hydrocoele is a collection of ?uid distending one or both sides of the scrotum with ?uid. Treatment is by withdrawal of the ?uid using a sterile syringe and aspiration needle.
Hypogonadism Reduced activity of the testes or ovaries (male and female gonads). The result is impaired development of the secondary sexual characteristics (growth of the genitals, breast and adult hair distribution). The cause may be hereditary or the result of a disorder of the PITUITARY GLAND which produces GONADOTROPHINS that stimulate development of the testes and ovaries.
Varicocoele is distension of the veins of the spermatic cord, especially on the left side, the causes being similar to varicose veins elsewhere (see VEINS, DISEASES OF). The chief symptom is a painful dragging sensation in the testicle, especially after exertion. Wearing a support provides relief; rarely, an operation may be advisable. Low sperm-count may accompany a varicocele, in which case surgical removal may be advisable.
Orchitis or acute in?ammation may arise from CYSTITIS, stone in the bladder, and in?ammation in the urinary organs, especially GONORRHOEA. It may also follow MUMPS. Intense pain, swelling and redness occur; treatment consists of rest, support of the scrotum, analgesics as appropriate, and the administration of antibiotics if a de?nitive microorganism can be identi?ed. In some patients the condition may develop and form an ABSCESS.
Torsion or twisting of the spermatic cord is relatively common in adolescents. About half the cases occur in the early hours of the morning during sleep. Typically felt as pain of varying severity in the lower abdomen or scrotum, the testis becomes hard and swollen. Treatment consists of immediate undoing of the torsion by manipulation. If done within a few hours, no harm should ensue; however, this should be followed within six hours by surgical operation to ensure that the torsion has been relieved and to ?x the testes. Late surgical attention may result in ATROPHY of the testis.
Tuberculosis may occur in the testicle, especially when the bladder is already affected. Causing little pain, the infection is often far advanced before attracting attention. The condition generally responds well to treatment with a combination of antituberculous drugs (see also main entry for TUBERCULOSIS).
Tumours of the testes occur in around 600 males annually in the United Kingdom, and are the second most common form of malignant growth in young males. There are two types: SEMINOMA and TERATOMA. When adequately treated the survival rate for the former is 95 per cent, while that for the latter is 50 per cent.
Injuries A severe blow may lead to SHOCK and symptoms of collapse, usually relieved by rest in bed; however, a HAEMATOMA may develop.... testicle, diseases of
The inflammation is caused by infection. Often, there is no obvious source of infection, but sometimes the cause is a bacterial urinary tract infection that has spread via the vas deferens to the epididymis. Treatment is with antibiotic drugs. If there is an underlying urinary tract infection, its cause will be investigated. (See also orchitis.)... epididymo-orchitis
groin.
It can be direct, in which there is a localized weakness in the abdominal wall, or, in men, indirect, in which the intestine protrudes through the inguinal canal, the passage through which the testes descend into the scrotum.... inguinal hernia
The various types include a silicone splint inserted in the tissues of the upper surface of the penis, and an inflatable prosthesis that is inflated by squeezing a small bulb in the scrotum.... penile implant
Ultrasound is replacing ISOTOPE scanning in many situations, and also RADIOGRAPHY. Ultrasound of the liver can separate medical from surgical JAUNDICE in approximately 97 per cent of patients; it is very accurate in detecting and de?ning cystic lesions of the liver, but is less accurate with solid lesions – and yet will detect 85 per cent of secondary deposits (this is less than COMPUTED TOMOGRAPHY [CT] scanning). It is very accurate in detecting gall-stones (see GALL-BLADDER, DISEASES OF) and more accurate than the oral cholecystogram. It is useful as a screening test for pancreatic disease and can di?erentiate carcinoma of the pancreas from chronic pancreatitis with 85 per cent accuracy.
Ultrasound is the ?rst investigation indicated in patients presenting with renal failure, as it can quickly determine the size and shape of the kidney and whether there is any obstruction to the URETER. It is very sensitive to the presence of dilatation of the renal tract and will detect space-occupying lesions, di?erentiating cysts and tumours. It can detect also obstruction of the ureter due to renal stones by showing dilatations of the collecting system and the presence of the calculus. Adrenal (see ADRENAL GLANDS) tumours can be demonstrated by ultrasound, although it is less accurate than CT scanning.
The procedure is now the ?rst test for suspected aortic ANEURYSM and it can also show the presence of clot and delineate the true and false lumen. It is good at demonstrating subphrenic and subhepatic abscesses (see ABSCESS) and will show most intra-abdominal abscesses; CT scanning is however better for the retroperitoneal region. It has a major application in thyroid nodules as it can di?erentiate cystic from solid lesions and show the multiple lesions characteristic of the nodular GOITRE (see also THYROID GLAND, DISEASES OF). It cannot differentiate between a follicular adenoma and a carcinoma, as both these tumours are solid; nor can it demonstrate normal parathyroid glands. However, it can identify adenomas provided that they are more than 6 mm in diameter. Finally, ultrasound can di?erentiate masses in the SCROTUM into testicular and appendicular, and it can demonstrate impalpable testicular tumours. This is important as 15 per cent of testicular tumours metastasise whilst they are still impalpable.
Ultrasonic waves are one of the constituents in the shock treatment of certain types of gallstones and CALCULI in the urinary tract (see LITHOTRIPSY). They are also being used in the treatment of MENIÈRE’S DISEASE and of bruises and strains. In this ?eld of physiotherapy, ultrasonic therapy is proving of particular value in the treatment of acute injuries of soft tissue. If in such cases it is used immediately after the injury, or as soon as possible thereafter, prompt recovery is facilitated. For this reason it is being widely used in the treatment of sports injuries (see also SPORTS MEDICINE). The sound waves stimulate the healing process in damaged tissue.
Doppler ultrasound is a technique which shows the presence of vascular disease in the carotid and peripheral vessels, as it can detect the reduced blood ?ow through narrowed vessels.
Ultrasound in obstetrics Ultrasound has particular applications in obstetrics. A fetus can be seen with ultrasound from the seventh week of pregnancy, and the fetal heart can be demonstrated at this stage. Multiple pregnancy can also be diagnosed at this time by the demonstration of more than one gestation sac containing a viable fetus. A routine obstetric scan is usually performed between the 16th and 18th week of pregnancy when the fetus is easily demonstrated and most photogenic. The fetus can be measured to assess the gestational age, and the anatomy can also be checked. Intra-uterine growth retardation is much more reliably diagnosed by ultrasound than by clinical assessment. The site of the placenta can also be recorded and multiple pregnancies will be diagnosed at this stage. Fetal movements and even the heartbeat can be seen. A second scan is often done between the 32nd and 34th weeks to assess the position, size and growth rate of the baby. The resolution of equipment now available enables pre-natal diagnosis of a wide range of structural abnormalities to be diagnosed. SPINA BIFIDA, HYDROCEPHALUS and ANENCEPHALY are probably the most important, but other anomalies such as multicystic kidney, achondroplasia and certain congenital cardiac anomalies can also be identi?ed. Fetal gender can be determined from 20 weeks of gestation. Ultrasound is also useful as guidance for AMNIOCENTESIS.
In gynaecology, POLYCYSTIC OVARY SYNDROME can readily be detected as well as FIBROID and ovarian cysts. Ultrasound can monitor follicular growth when patients are being treated with infertility drugs. It is also useful in detecting ECTOPIC PREGNANCY. (See also PREGNANCY AND LABOUR.)... ultrasound
scrotum resembling labia. (See also hermaphroditism, sex determination.)... pseudohermaphroditism
Symptoms. A hard usually painless mass in the scrotum can give rise to gynaecomastia – abnormal enlargement of the male breasts.
Of possible value. Alternatives: – Abundant herb teas – Cornsilk, Red Clover, Violet leaves.
Decoction. Echinacea 2; Kava Kava 1; Sarsaparilla 1. Mix. Half an ounce (15g) to 1 pint (500ml) water simmered gently 20 minutes. Cup thrice daily.
Formula. Sarsaparilla 2; Kava Kava l; Pulsatilla half; Thuja quarter. Mix. Dose: Powders: 500mg (two 00 capsules or one-third teaspoon). Liquid extracts: 1 teaspoon. Tinctures: 2 teaspoons. Thrice daily. Vinchristine.
Diet. See: DIET – CANCER. Researchers from Cambridge University found that an extra pint of milk a day during adolescence was associated with 2 and a half times increased risk of testicular cancer. (Journal of Epidemiology and Community Health, Oct. 1993)
Treatment by or in liaison with a general medical practitioner. ... cancer – testicles
Treatment. Aspiration or surgery. Pulsatilla is a key remedy. Ellingwood recommends Thuja. Poke root. Pulsatilla: tablets, tincture. Liquid Extract: thrice daily.
Thuja. Tea, liquid extract or tincture. See entry.
Poke root. Tablets, Decoction, liquid extract or tincture. See entry.
Supportives: cold hip bath. Attention to bowels; a laxative may relieve pressure. ... gsl hydrocele
Congenital azoospermia may be due to a chromosomal abnormality such as Klinefelter’s syndrome; failure of the testes to descend into the scrotum; absence of the vasa deferentia (ducts that carry sperm from the testes to the seminal vesicles); or cystic fibrosis.
In some males, azoospermia may be the result of hormonal disorders affecting the onset of puberty. Another cause is blockage of the vasa deferentia, which may follow a sexually transmitted infection, tuberculosis, or surgery on the groin. Azoospermia can also be the result of damage to the testes. This can follow radiotherapy, treatment with certain drugs, and prolonged exposure to heat, or the effects of occupational exposure to toxic chemicals.
If the cause is treatable, sperm production may restart. However, in some cases, the testes will have been permanently damaged.... azoospermia
Some species of worm live in the lymphatic vessels. Swollen lymph nodes and recurring fever are early symptoms. Inflammation of lymph vessels results in localized oedema. Following repeated infections, the affected area, commonly a limb or the scrotum, becomes very enlarged and the skin becomes thick, coarse, and fissured, leading to a condition known as elephantiasis. The larvae of another type of worm invade the eye, causing blindness (see onchocerciasis). A third type, which may sometimes be seen and felt moving beneath the skin, causes loiasis, characterized by irritating and sometimes painful areas of oedema called calabar swellings.
The diagnosis of filariasis is confirmed by microscopic examination of the blood. The anthelmintic drugs diethylcarbamazine or ivermectin most often cure the infection but may cause side effects such as fever, sickness, muscle pains, and increased itching. Diethylcarbamazine can be given preventively, and the use of insecticides and protective clothing help to protect against insect bites. (See also roundworms; insects and disease.)... filariasis
Varicocele is a common condition.
It almost exclusively affects the left testis and is usually harmless, although there may be aching in the scrotum or an abnormally low sperm count (see infertility).
Aching may be relieved by supportive underwear.
Surgery to divide and tie off the swollen veins may be performed if the sperm count is low.... varicocele
Semen travels along 2 ducts to the urethra.
The ducts pass through the prostate gland, which produces secretions that are added to the semen.
At orgasm, semen is ejaculated from the urethra through the erect penis, which is placed in the woman’s vagina during sexual intercourse.... reproductive system, male
Diagnosis is by physical examination.
Surgery is performed to untwist the testis and anchor it in the scrotum with small stitches to prevent recurrence.
If irreversible damage has occurred, orchidectomy is performed.
In either case, the other testis is anchored to the scrotum to prevent torsion on that side.
With prompt treatment, recovery of the testis is complete.... testis, torsion of
A diagnosis is made during a physical examination after birth or later in infancy.
Treatment is by orchidopexy, which usually reduces the risk of later infertility or testicular cancer (see testis, cancer of).
A poorly developed undescended testis may be removed if the other is normal.... testis, undescended
A defect of the valves in the leg veins causes blood to pool in the veins near the surface of the skin, causing them to become varicose. Contributing factors include obesity, hormonal changes and pressure on the pelvic veins during pregnancy, hormonal changes occurring at the menopause, and standing for long periods of time. Varicose veins are common, tend to run in families, and affect more women than men.Varicose veins may not cause any problems but may ache severely; swollen feet and ankles and persistent itching may occur. These symptoms may worsen during the day and can be relieved only by sitting with the legs raised. In women, symptoms are often worse just before menstruation. In severe cases, leg ulcers may occur. Thrombophlebitis may be associated with varicose veins.
Usually, support stockings, regular walking, and sitting with the feet up as much as possible are the only measures required.
In more severe cases, sclerotherapy may be carried out.
Varicose veins may require surgical removal if they become painful or ulcerated, but they may later develop elsewhere.... varicose veins
Hernias may be complicated by becoming impossible to return to their normal site (irreducible); swollen and fixed within their sac (incarcerated); or cut off from their blood supply, becoming painful and eventually gangrenous (strangulated). The best treatment for hernias, especially if they are painful, is surgical repair (see hernioplasty).... hernia
Teratomas often produce *alpha-fetoprotein, beta human chorionic gonadotrophin, or both; the presence of these substances (*tumour markers) in the blood is a useful indication of the amount of tumour and the effect of treatment.... teratoma