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disorders of the external genitalia clinical
R-GU
40
Medical
Graduate
10/11/2010

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Term
what are the most important modalities needed to make a dx in terms of disorders of the external genitalia?
Definition
thorough inspection of the penis, palpation & ultrasound (US) of the scrotal contents (in that order)
Term
what is the most common mass lesion w/in the scrotum? tx?
Definition
hydrocele - which is an accumulation of fluid between the *visceral and parietal* layers of the tunica vaginalis (which wraps around the testicle itself or testicle + cord). tx: left alone and only treated w/sx if problematic
Term
what does congenital hydrocele result from?
Definition
persistence of peritoneal fluid w/in one or more *unobliterated segments of the process vaginalis that usually communicate w/the peritoneal cavity - requires sx (when the infant cries - the hydrocele will get larger). these are usually accompanied by inguinal hernia (or one will arise) which also requires sx.
Term
what is the etiology of non-congenital hydroceles?
Definition
reduction in reabsorption or an increase in production of a fluid by secreting membranes. can be *idiopathic, due to injury/infection, and more rarely - secondary to prostate/bladder/testicle CA.
Term
what is found on physical examination for hydrocele?
Definition
the involved side is large, has a sense of fluctuation (water balloon), can be soft to very firm, can be transilluminated, will not reduce in size unless it communicates (which if it does, a hernia is involved), and the testicle may not be palpable.
Term
what is tx for hydrocele?
Definition
mostly just observation (esp in children), if very large/uncomfortable - sx, and if the testicle is not palpable/at high testicular CA risk - sx is advised. no hydrocele is life-threatening or pre-malignant.
Term
what is an inguinoscrotal hernia?
Definition
an indirect hernia sac extending through the inguinal canal, down into the scrotum. these usually contain bowel, but may contain omentum/bladder. usually these reduce w/lying down - but occasionally if they are incarcerated/strangulated, sx would be urgent. the testicle and epididymis is usually palpable but an inguinoscrotal hernia does not translate well.
Term
what is a spermatocele?
Definition
a retention cyst at the head of the epididymis or aberrant tubules of the rete testes. spermatoceles will usually transilluminate and are separate from the testicle on palpation. spermatoceles are firm, usually non-tender, and about the size/shape of a marble. they contain spermatozoa and are only removed if painful.
Term
what is a varicocele? what side are they seen more commonly on?
Definition
a dilation of the internal/external spermatic and vassal veins w/in the scrotum due to an incompetency/absence of valves in the internal spermatic vein, allowing retrograde flow of blood. these are *more common on the L (L side empties into the renal vein at a 90 degree angle).
Term
what might a varicocele of acute onset be due to?
Definition
a retroperitoneal mass compressing the splenic vein - need to get a CT
Term
how do varicoceles present?
Definition
usually symptomatic - but may present as "heaviness/aching" in the scrotum. on palpation: "bag of worms" in the *upright position*
Term
is varicocele the *most common cause of male infertility?
Definition
yes - varicoceles are associated w/reductions in sperm motility/maturation due to rises in temperature.
Term
when is tx for varicocele appropriate?
Definition
in the context of discomfort/infertility
Term
what is a hematocele?
Definition
this results from trauma to the testicle - producing a collection of blood between the *parietal and visceral* layers of the *tunica vaginalis. this is usually associated with ecchymosis (bruising) of the scrotum and if the testicles cannot be palpated US/sx is necessary.
Term
how urgent is testicular torsion?
Definition
testicular torsion is *extremely urgent (requires prompt dx/tx). >90% occur in the first 2 decades of life.
Term
what characterizes intravaginal torsion?
Definition
this is the most common form of torsion, where the testicle and cord twist *w/in the tunica vaginalis* - resulting from the combination of high insertion of the tunica on the cord and an abnormally long mesorchium OR failure of attachment of the epididymis to the posterolateral scrotal wall (bell clapper).
Term
what characterizes extravaginal torsion?
Definition
less common, this only happens in the neonatal period and 1st year of life. this will occur in fetus pre-delivery; testicle on examination is hard, non-tender, and gone by the time baby is born - *requires emergency surgery to save.
Term
how does testicular torsion present?
Definition
in any pt other than a neonate - *severe, sudden pain. exquisite tenderness on palpation which may refer along the cord to the groin/lower abdomen. this pain can subside spontaneously and be recurrent and may worsen to the point of n/v. the testicle/epididymis is engorged, enlarged, and high in the scrotum w/a thickened cord.
Term
are UTI symptoms associated with testicular torsion?
Definition
no
Term
how soon does irreversible destruction occur w/testicular torsion?
Definition
5-12 hrs
Term
what should be in the ddx for testicular torsion?
Definition
epididymitis and epididymo-orchitis, which if the pt is negative for abnormal urinalyses, fever, etc - can be r/o
Term
what is the tx for testicular torsion?
Definition
pain management, manual detorsion and then prompt surgical detorsion *B/L* (b/c usually a deficiency of the detaching mechanisms of both testicles)
Term
what are the 2 testicular appendages of clinical significance? what may happen to them? tx?
Definition
the appendix testes (attached to tunica albuginea & located on superior anterior aspect of testes) and appendix epididymis (located on the anterior aspect of the epididymis globus major). either may be subject to torsion and produce a sudden onset of mod-severe pain, usually located to site of twisted appendage (only point tenderness). the pain should leave spontaneously w/in 1 wk, tx only needs to be supportive if dx assured (since they are vestigial - no problem if they die off)
Term
what is the difference between acute epididymis, epididymo-orchitis & orchitis?
Definition
acute epididymis will always become epididymo-orchitis if not treated. orchitis only occurs with systemic viral disease (like the mumps). all are commonly associated w/fever and usually start as mild discomfort in the lower abdomen and within the scrotum -> progressing to severe pain, mostly in the scrotum.
Term
what characterizes incidence of epididymo-orchitis?
Definition
epididymo-orchitis is usually preceded by urethritis ( age 40); often also associated w/large prostates.
Term
how does epididymo-orchitis present? what needs to be r/o?
Definition
at first, the epididymis is swollen and tender - followed by enlargement and tenderness of the entire testicle w/in 3 days. pyuria is usually present (but not w/viral orchitis) as is elevated WBC. testicular torsion/tumors need to be r/o.
Term
what is tx for epididymo-orchitis? what is the sequence of resolution?
Definition
ice, elevation, scrotal support, analgesics, antibx (broad spec, cipro) - but if pyuria not present, viral etiology is likely. *the pain will resolve first, followed by a reduction in size/induration*
Term
what is the worst case scenario for epididymo-orchitis?
Definition
progression to abscess and loss of a testicle
Term
is swelling w/testicular CA painful?
Definition
no - but it can produce secondary inflammation, hydroceles, or hematoceles
Term
what is the most reliable imaging study for testicular CA?
Definition
US
Term
how should the primary testicular tumor be removed?
Definition
inguinally
Term
what is effective in tx of metastatic testicular CA?
Definition
chemo
Term
can pts die of necrotizing fasciitis of the scrotum?
Definition
yes, this is a medical emergency and can often affect DM pts
Term
what is urinary (urethral) extravasation usually due to? how is it diagnosed? tx?
Definition
blunt/penetrating trauma usually causes it. it is diagnosed via retrograde urethrogram and treated w/insertion of cystotomy tube.
Term
what are common dermatoses of the scrotum?
Definition
tinea cruris, eczema, monilia, lice, folliculitis, hemangiomas
Term
what are most penile CA? who are they usually found in? where does it met?
Definition
SCC - almost exclusively found in uncircumcised males (why foreskin needs to be retracted) and mets through the lymph system.
Term
what is peyronie's disease? tx?
Definition
abnormal dorsal or ventral curvatures of the erect penis which present w/pain and difficulty w/vaginal penetration/poor erection due to a fibrous plaque of the dorsal or ventral tunica albuginea. can regress spontaneously or require surgery; often is not responsive to other treatments.
Term
what is priapism? how does it present? how is it treated?
Definition
prolonged painful erection, NOT related to sexual stimulation most commonly caused by *intracavernous injection of vasoactive agents for impotency (other causes include leukemia, sickle cell disease, pelvic tumors, trauma, and prolonged stimulation). *this is a urologic emergency* - if it isn’t reduced, permanent fibrosis/impotency will occur. on physical exam: tense corpora cavernosa, *soft glans and soft corpora spongiosum* tx: intracorporal adrenergic injection irrigation, shunts, exchange transfusions for sickle cell disease, chemo for leukemia
Term
what is phimosis and paraphimosis?
Definition
phimosis: a condition where the foreskin cannot be retracted due to stenosis. paraphimosis: retracted foreskin cannot be reduced and progressive swelling occurs - *urologic emergency*
Term
what can cause scrotal edema?
Definition
filariasis
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