The most common malignancy in men aged 15-45 years
Overall it is a rare malignancy
If diagnosed early, has a 5-year survival rate of 95%
Classification:
Majority are derived from germ cells (cells that make sperm) and further classified into
Seminomas
Non-seminomas
The rest are non-germ cell tumours e.g. leydig and sertoli cell tumours
Risk factors:
Cryptorchidism
Family history
Hypospadias
Klinefelter's syndrome
Symptoms:
Unilateral painless testicular lump - irregular, firm and fixed
Sometimes secondary hydrocele if testicular capsule involved
Sometimes there can be testicular pain/discomfort
Spread via lymphatics to para-aortic nodes around L1/2 so can have back pain and abdominal mass on palpation
If metastases - weight loss, back pain and dyspnoea (lung mets)
Assessment of a testicular lump should include the 6 Ss:
Site
Size
Shape
Symmetry
Skin change
Scars
Tumour markers:
Can be diagnostic and prognostic but negative markers do not exclude testicular cancer
Good for monitoring recurrence post operatively
Beta HCG - can be raised in any type of germ cell tumour
AFP - only non germ cell tumours
LDH - general marker of cell turnover
Referral:
2WW referral in men with non-painful enlargement or change in shape or texture of testis
Also consider malignancy in:
New hydrocele aged 18-40 years
Unexplained retroperitoneal mass or complication of retroperitoneal mass e.g. varicocele that appears suddenly and is painful, does not drain when lying down, or solitary right sided
Imaging:
Testicular ultrasound - need to look at both testes to ensure no bilateral disease
If ultrasound suggests malignancy surgery is arranged - orchidectomy is diagnostic as can test tissue from testicle and therapeutic as removes cancer
CT CAP with contrast for staging
Management:
MDT discussion
Radical inguinal orchidectomy - removal of the testicle, epididymis and spermatic cord up to the level of the internal inguinal ring
Counsel patients on sperm banking and cryopreservation as well as testicular prosthesis
Tumour staging and histopathological results guide further management with options including surveillance, chemotherapy, radiotherapy