<s>[INST] At the base of my spine and like above the anal opening, but still in the butt crack there is something hard right at the ending of the spine and it has been hurting for a while now. When I squeezed it tonight a light yello mucous like substance shot out and now there is just clear fluid. Is this a cause for concern? Could the clearish fluid be spinal fluid? [/INST] Hi,Dear,Thanks for your query to HCM.Dear I read your query and reviewed it with context to your query facts.Based on the facts of your query, you seem to suffer from-Pilonidal Cyst with abscess,which   ruptured and formed Pilonidal Sinus.Treatment-USG / CT study of the Pilondal sinus and Second expert Opinion from Surgeon would help plan further treatment for you.As the recurrence is more with this sinus-I would suggest following options-Debridement of the Pilonidal Sinus with Excision of the Sinus or Marsupilisation of the Pillonidal Sinus.Coccygectomy-Removal of SacroCoccygeal / or tail bone would end  the possibility of the recurrence of such pilonidal sinus with recurrent abscess.Hope this would help you to plan further treatment with your family and specialist doctors there.Welcome for any further query in this regard.Good Day!!Dr.Savaskar M.N.Senior Surgical SpecialistM.S.Genl-CVTS </s>