TLDR A young dog with an enlarged prostate and cysts improved significantly after treatment and surgery.
A 3-year-old male German Shepherd was diagnosed with prostatic cystic hyperplasia, leading to an enlarged prostate and significant cysts, causing urethral obstruction and reactive lymph nodes. Cytology showed benign epithelial proliferation, and blood tests indicated thrombocytopenia and postrenal azotemia. Treatment involved antibiotics, finasteride, meloxicam, and sterilization. Post-surgery, the prostate volume reduced by 65% in 5 days and by 93.9% after 138 days, with no neoplastic process detected.
2 citations,
February 2023 in “BJUI” Urologists should monitor mental health in patients taking finasteride due to potential links to suicidal thoughts, adjusting dosage or stopping use if necessary. More research is needed to confirm if finasteride causes these thoughts.
May 2017 in “American Society of Health-System Pharmacists eBooks” 
86 citations,
July 1993 in “Drugs” Finasteride treats enlarged prostate, shrinks it, improves urination, but may cause sexual dysfunction and isn't for women or children.
6 citations,
May 2022 in “Research and reports in urology” Caesalpinia bonduc seed extracts may help treat enlarged prostate in rats.
1 citations,
August 2022 in “Veterinary medicine and science” The main prostate diseases in dogs are benign growth, infections, and cancer, with various treatments ranging from drugs to surgery, but cancer treatments have limited success.
