There is stil no consensus on the best treatment.
It all depends on how many cysts there are, age, and how long symptoms are there already (nerve damage).
Interventional therapies have been performed to relieve pain and symptoms of symptomatic Tarlov cysts, such as aspiration of the cyst followed by injection of fibrin glue. However, recurrence of symptoms occurs and intra procedural bleeding or nerve injury makes any subsequent surgery more difficult. Arachnoiditis can occur due to fibrin glue getting into the thecal sac. The fibrin bonding technique is falling out of favor both in the United States and abroad, with only a few centers with significant experience continuing its use. Strict patient selection is necessary because this technique cannot be injected into a non-valve-ventilated cyst or a wide-necked cyst.
In general, microsurgery would be the treatment of choice to treat nerve root compression. However, the surgery is delicate due to the high hydrostatic pressure, fragility of tissues, and the presence of the nerve root fibers in the cyst or cyst wall leading to high incidence of complications such as a dural leak or nerve damage. However, the quality of the evidence is poor due to methodological problems. In addition, with the underlying cause, the hydrostatic pressure is not resolved, allowing cysts to recur or new cysts to form.
Studies comparing medical, interventional and surgical treatments are scarce and questionable and have been derived from relatively small case series of small trial size. Postoperative complications were significant in the surgical group and included CSF leakage, transient sciatica, sexual dysfunction, wound infections and others (venous hemorrhage, transient intracranial hypotension, seroma, cerebral hemorrhage and prostatitis). Within the non-surgical group, among others, CSF leaks, transient sciatica and other complications were seen as aseptic meningitis, allergic reaction to the sealant. It is also unclear which possible indications predict a response to treatment. It was shown that advanced age, the number of perineural cysts observed preoperatively and the duration of symptoms gave a poor postoperative outcome. Nevertheless, treatment methods are recommended as the preferred method and it should be determined whether the benefits outweigh the risks of aggressive treatment, as it can lead to significant morbidity with a significant risk of recurrence of symptoms.
It is believed that when the cyst is "removed", the nerve compression will be relieved and the patient's problems should be resolved. In cases of large valved cysts, which are quite uncommon, microsurgical treatment may help, but will not resolve the underlying cause of the pressure. During follow-up of 36 symptomatic patients, 93% of patients showed improvement at some point, however 50% developed recurrent pain, despite cyst size reduction.
https://www.researchgate.net/publication/297663732_Electromyographic_Abnormalities_Associated_with_Symptomatic_Sacral_Tarlov_Cysts
https://www.researchgate.net/publication/333025384_Symptomatic_Tarlov_cysts_are_often_overlooked_ten_reasons_why-a_narrative_review
“Growth of Lumbosacral Perineural (Tarlov) Cysts: A Natural History Analysis”
https://pubmed.ncbi.nlm.nih.gov/30535342/
Chapter 115 (Feigenbaum - Henderson - Voyadzis)
https://clinicalgate.com/tarlov-cysts/