Based on your MRI, there is a small low intersphincteric fistula with a tiny intersphincteric abscess (0.03 cc). However, MRI findings should always be correlated with clinical examination, and a chronic fissure can sometimes mimic or coexist with a small fistula.
Since one surgeon could not identify a fistula clinically while others advised surgery based on the MRI, I recommend consulting an experienced colorectal surgeon. If there is recurrent pus discharge, repeated swelling (“pimple”), or persistent symptoms, an Examination Under Anaesthesia (EUA) may be the best way to confirm or rule out a fistula before proceeding with surgery.
Meanwhile, continue fissure care with a high-fiber diet, adequate fluids, warm sitz baths, and stool softeners if needed. Do not rush into surgery based on the MRI report alone; the decision should be based on both your symptoms and examination findings.
Next Steps
Consult a colorectal surgeon for clinical correlation and, if needed, EUA to establish the diagnosis before planning treatment.
Health Tips
Recurrent swelling or pus discharge strongly suggests a fistula, whereas a fissure alone usually causes pain and bleeding without recurrent boils.