Journal of AdvancedMedical and Dental Sciences Research

Aim: To evaluate role of transcutaneous perianal ultrasonography in assessment of perianal fistulae with MRI correlation. Methodology: 80 cases of perianal fistulae of both genders underwent perianal sonography and MRI examinations. St. James’s classification and Parks classification was recorded. Results: Out of 80 patients, males were 44 (55%) and females were 36 (45%). Type was intersphincteric in 42%, transsphincteric in 38%, suprasphincteric in 16% and Extrasphincteric in 4%. The difference was significant (P< 0.05). St. James’s classification showed grade I in 34%, grade II in 20%, grade III in 12%, grade IV in 24% and grade V in 10% cases. The difference was significant (P< 0.05). Detection of primary fistulous and sinus tract was positive on TPUS and MRI in all 80 cases, detection of secondary tracts/ramifications was positive on 7 cases on TPUS and 8 cases on MRI, detection of abscess was seen in 10 cases on TPUS and 9 cases on MRI and detection of internal opening was seen in 76 cases in TPUS and 74 cases of MRI. Conclusion: TPUS is an efficient method in the evaluation of perianal fistulae. It has high sensitivity and specificity in diagnosing and classifying perianal fistulae and abscess as compared to MRI.