Testicular torsion: Difference between revisions

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==Background==
==Background==
[[File:Gray1144.png|thumb|Scrotal anatomy]]
[[File:Figure 28 01 03.jpg|thumb|Testicular anatomy]]
[[File:Illu testis surface.jpg|thumb|1. Epididymis 2. Head of epididymis 3. Lobules of epididymis 4. Body of epididymis 5. Tail of epididymis 6. Duct of epididymis 7. Deferent duct (ductus deferens or vas deferens)]]
[[File:Illu testis surface.jpg|thumb|1. Epididymis 2. Head of epididymis 3. Lobules of epididymis 4. Body of epididymis 5. Tail of epididymis 6. Duct of epididymis 7. Deferent duct (ductus deferens or vas deferens)]]
[[File:Figure 28 01 03.jpg|thumb|Diagram of inner structures of testicles]]
*Must consider as a ddx in all acute scrotal pain
**May lead to testicular ischemia and subsequent infertility
*A clear precipitating factor is not necessary identified; half occur during sleep
*Bimodal incidence
*Bimodal incidence
**First peak in first year of life
**First peak in first year of life
**Second peak at puberty
**Second peak at puberty
*Risk factors
 
**Undescended testicle
===Risk factors===
**Bell-clapper deformity
*Mechanical: Exertional/exercise, trauma
*Half occur during sleep
*Testicular masses
*May present after scrotal trauma with persistent pain
*Undescended testicle
*Bell-clapper deformity
 


'''Salvage Rates for Detorsion Times'''  
'''Salvage Rates for Detorsion Times'''  
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**Abrupt onset testicular pain associated with nausea or [[vomiting]]  
**Abrupt onset testicular pain associated with nausea or [[vomiting]]  
**May have previous similar intermittent, self-resolving episodes
**May have previous similar intermittent, self-resolving episodes
**May present after scrotal trauma with persistent pain
**May present as lower abd pain; thus, inquire specifically about scrotal pain in males with abd pain
*Physical exam:
*Physical exam:
**Swollen, high-riding testis
**Swollen, tender, high-riding testis
**Transverse testicular lie  
**Transverse testicular lie  
**Absent cremasteric reflex on affected side (99% sensitivity)
**Absent cremasteric reflex on affected side (99% sensitivity)
*[[testicular ultrasound|Ultrasound]]
**Only indicated for equivocal cases
**Unilateral absence of blood flow


==Differential Diagnosis==
==Differential Diagnosis==
{{Template:Testicular DDX}}
{{Testicular DDX}}


==Evaluation==
==Evaluation==
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*NPV 100% when <2 points (Suggesting clinical clearance)<ref>Barbosa, JA, et al. Development of initial validation of a scoring system to diagnose testicular torsion in children. The Journal of Urology. 2013; 189:1853-8.</ref>
*NPV 100% when <2 points (Suggesting clinical clearance)<ref>Barbosa, JA, et al. Development of initial validation of a scoring system to diagnose testicular torsion in children. The Journal of Urology. 2013; 189:1853-8.</ref>
*Scores from 2-5 patients require U/S for further assessment
*Scores from 2-5 patients require U/S for further assessment
===Diagnosis===
*[[testicular ultrasound|Ultrasound]]
**Only indicated for equivocal cases
**Unilateral absence of blood flow


==Management==
==Management==
*Manual detorsion (temporizing measure)
*Manual detorsion (temporizing measure)
**Typically done if surgical management is not immediately available
*Urological consultation for detorsion and orchipexy
*Urological consultation for detorsion and orchipexy
**Surgical exploration is the gold standard; without surgery, difficult to determine if manual detorsion has worked


===Manual Detorsion===
===Manual Detorsion===
*Not definitive treatment
*Not definitive treatment. Temporizing measure if urologist not immediately available
**Temporizing measure if urologist not immediately available
*May require conscious sedation or parenteral [[analgesia]] if severe pain is anticipated
#Provide parenteral [[analgesia]] or perform cord block (grasp cord at external ring and inject 10 mL [[lidocaine]] directly into cord)
#May perform cord block
#*Grasp spermatic cord as it enters scrotum, track up to external ring, create skin wheal, and inject 10 mL [[lidocaine]] directly into the anterior, lateral, medial portions of cord <ref>Gordon J, Rifenburg RP. Spermatic Cord Anesthesia Block: An Old Technique Re-imaged. West J Emerg Med. 2016 Nov;17(6):811-813. doi: 10.5811/westjem.2016.8.31017. Epub 2016 Sep 13. PMID: 27833695; PMCID: PMC5102614.</ref>
#"Open the book" by twisting testicle outward and laterally
#"Open the book" by twisting testicle outward and laterally
#*Grasping testicle with thumb and forefinger, rotate 180 degrees in medial to lateral direction
#*Grasping testicle with thumb and forefinger, rotate 180 degrees in medial to lateral direction
#Repeat rotation 2 - 3 times until testicle is detorsed and pain decreases
#Repeat rotation 2 - 3 times until testicle is detorsed and pain decreases
#If pain is worse after rotation or if rotation is not successful, attempt to rotate testicle in opposite direction
#If pain is worse after rotation or if rotation is not successful, attempt to rotate testicle in opposite direction
#*In a small percentage of cases, testis is actually laterally rotated and thus, medial rotation is needed


==Disposition==
==Disposition==

Latest revision as of 00:46, 21 November 2023

Background

Scrotal anatomy
Testicular anatomy
1. Epididymis 2. Head of epididymis 3. Lobules of epididymis 4. Body of epididymis 5. Tail of epididymis 6. Duct of epididymis 7. Deferent duct (ductus deferens or vas deferens)
  • Must consider as a ddx in all acute scrotal pain
    • May lead to testicular ischemia and subsequent infertility
  • A clear precipitating factor is not necessary identified; half occur during sleep
  • Bimodal incidence
    • First peak in first year of life
    • Second peak at puberty

Risk factors

  • Mechanical: Exertional/exercise, trauma
  • Testicular masses
  • Undescended testicle
  • Bell-clapper deformity


Salvage Rates for Detorsion Times

Time Rate
<6 hrs 90-100%
6-12 hrs 20-50%
>24 hrs 0-10%

Clinical Features

  • History:
    • Abrupt onset testicular pain associated with nausea or vomiting
    • May have previous similar intermittent, self-resolving episodes
    • May present after scrotal trauma with persistent pain
    • May present as lower abd pain; thus, inquire specifically about scrotal pain in males with abd pain
  • Physical exam:
    • Swollen, tender, high-riding testis
    • Transverse testicular lie
    • Absent cremasteric reflex on affected side (99% sensitivity)

Differential Diagnosis

Testicular Diagnoses

Evaluation

Work-Up

  • Do not delay urologic consultation for work-up
    • Consult urology immediately if strongly suspicious for torsion
  • Urinalysis
  • Ultrasound for equivocal cases
    • Bedside U/S has a SN 0.95 and SP 0.94 compared to a gold standard of radiology U/S[1]
  • Lab workup for surgery

TWIST Score

  • Proposed score for assessing testicular torsion in children
Finding Points
Testicular swelling 2
Hard testicle 2
Absent cremasteric reflex 1
Nausea or vomiting 1
High-riding testicle 1
  • PPV 100% when >5 points (Suggesting stat urological consult)
  • NPV 100% when <2 points (Suggesting clinical clearance)[2]
  • Scores from 2-5 patients require U/S for further assessment

Diagnosis

  • Ultrasound
    • Only indicated for equivocal cases
    • Unilateral absence of blood flow

Management

  • Manual detorsion (temporizing measure)
    • Typically done if surgical management is not immediately available
  • Urological consultation for detorsion and orchipexy
    • Surgical exploration is the gold standard; without surgery, difficult to determine if manual detorsion has worked

Manual Detorsion

  • Not definitive treatment. Temporizing measure if urologist not immediately available
  • May require conscious sedation or parenteral analgesia if severe pain is anticipated
  1. May perform cord block
    • Grasp spermatic cord as it enters scrotum, track up to external ring, create skin wheal, and inject 10 mL lidocaine directly into the anterior, lateral, medial portions of cord [3]
  2. "Open the book" by twisting testicle outward and laterally
    • Grasping testicle with thumb and forefinger, rotate 180 degrees in medial to lateral direction
  3. Repeat rotation 2 - 3 times until testicle is detorsed and pain decreases
  4. If pain is worse after rotation or if rotation is not successful, attempt to rotate testicle in opposite direction
    • In a small percentage of cases, testis is actually laterally rotated and thus, medial rotation is needed

Disposition

  • To OR or urology

See Also

References

  1. ↑ Blaivas, M, et al. Emergency evaluation of patients presenting with acute scrotum using bedside ultrasonography. Academic Emergency Medicine. 2001; 8(1):90-93.
  2. ↑ Barbosa, JA, et al. Development of initial validation of a scoring system to diagnose testicular torsion in children. The Journal of Urology. 2013; 189:1853-8.
  3. ↑ Gordon J, Rifenburg RP. Spermatic Cord Anesthesia Block: An Old Technique Re-imaged. West J Emerg Med. 2016 Nov;17(6):811-813. doi: 10.5811/westjem.2016.8.31017. Epub 2016 Sep 13. PMID: 27833695; PMCID: PMC5102614.
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