Clinical Disease of SA Repro Tract 2 Flashcards
What is the most common congenital defect seen in the dog?
Cryptorchidism
By what age should testicles be descended?
6 months
Where is the commonest site for undescended testcile to be stuck?
inguinal canal (may also be abdo or prescrotal)
Which dogs are predisposed to cryptorchidism?
Pedigree
What are retained testicles more susceptible to?
Torsion and neoplasia
WHat is the treatment of cryptorchidism?
Castration afvised to prevent future problems (removal of undescended testicle)
Is anarchism/monarchism common?
no
- testicular hypoplasia possible
What are common causes of different sized testicles? Do they usually grow or shrink?
- usually increase in size
- Commonest cause neoplasia
- Orchitis/epidydmitis
- Torsion (rare)
How is Dx of differnet sized testicles decided?
- Hx, Pe
- Ultrasound
- Aspiration/Biopsy
Is testicular neoplasia common in cats?
NO
What are the 3 most common testicular tumour types?
- Interstitial cell (leydig)
- Sertolli cell
- Seminoma
> === incidence
> often multiple tumour types in single testicle
Are testicular tumours generally bening or malignant?
Scrotal = benign Retained = Malignant (potentially just due to diagnosed later?)
Where do metastases usually go to?
- regional LNs
- viscera (occasionally)
Which tumours produce hormones when functional? What paraneoplastic effects may this have?
- Leydig = testosterone -> dominance
- Sertoli = oestrogen -> feminisation
- Seminomas -> rarely feminisation
> Infertiility due to hormones and replacement of functiuonal tissue
Why may one testicle become smaller?
- Feminising hormones secreted by functional tumour of other testicle
Is orchitis/epidydmitis common?
No
What clinical signs are associated with orchitis/epidydmitis?
- epidydmal enlargement
- testicular pain
- tenseness, scrotal oedema
- abscessation
- systemic disease
Where do infections of the testciles originiate from>?
- urinary tract
- direct penetration
- haematogenous
What are the clinical signs of chronic epidydmitis/orchitis?
- small firm testicle
- epidydmal enlargement
- adhesions between tunics and scrotum v testicular mobility
What is the usualy treatment of orchitis/epidydmitis?
castration
When is testicular torsion more common and what is the general treatement?
- retained testicle
- castration
What are DDx for protruding penis?
- Paraphimosis
- Priapism
- Trauma
What is priaphimosis? What are potential causes?
- non erect penis protrudes from prepuce
> causes - narrowed preputial orifice (congenital or acquired)
- penile enlargement after mating
- failure of penis to stay in prepuce (short prepuce congen/acq, weak preputial/retractor penis mm., contracture following wound)
What is the treatment of paraphimosis?
- symptomatic
- Sx enlarging preputial orifice
- phallopexy (weak mm)
- preputial lengthening/reconstructive Sx
- partial penile amputation
What is priapism? Is it common?
Persistent erection >4 hours not associated with sexual excitement
- uncommon in cats and dogs