Correlation analysis of imaging features and clinicopathological features in 53 cases of first branchial cleft cyst

doi:10.19438/j.cjoms.2021.01.005

Abstract

Abstract: PURPOSE: To analyze the correlation between imaging characteristics of the first branchial cleft cyst (FBCC) and different pathological types, and to analyze the different clinical treatment methods of each pathological type. METHODS: A retrospective study was conducted for FBCC patients who were confirmed by surgery and postoperative pathology in Shanghai Ninth Peoples' Hospital from January 2013 to December 2019. All the patients underwent CT and MRI examinations before surgery. The clinical, pathological, imaging and prognostic data were statistically analyzed using SPSS 26.0 software package. RESULTS: All 53 cases were confirmed by surgical pathology. Forty-nine cases (49/53, 92.5%) were located in the parotid gland areas, and 4 cases (4/53, 7.5%) were located below the submandibular angle and above the hyoid bone. TypeⅠ was in 45 cases and type Ⅱ was in 8 cases. Obvious infection was seen in 7 cases (typeⅠ: 3 cases, type Ⅱ: 4 cases), sinus/fistula in 6 cases (typeⅠ: 2 cases, type Ⅱ: 4 cases). Forty-nine patients underwent tumor resection, and 4 patients underwent expanded tumor resection. The median follow-up time was (41.52±24.59) months. Six patients (6/53, 11.3%) recurred after operation. The patient's age (≤10 years old), cysts with fistula/sinus, deep location deep to the facial nerve and history of incision and drainage had significant differences on recurrence(P<0.05). FBCCs were mostly located between facial nerve branches (32/53, 60.4%), and most of them had clear boundary (48/53, 90.6%). Type Ⅰ and Ⅱ had significant differences in morphology, CT value, density/signal (P<0.05). Thin-slice CT combined with multiplanner reformation (MPR) technique showed 6 cases (6/6, 100%) of FBCC with fistula/sinus tracts, the lengths were 1.5-3 mm and tube diameters were 0.7-1.5 mm, without obvious fistula/sinus tract on MRI. CONCLUSIONS: FBCC with different clinicopathological features has different imaging features, and thin-slice CT combined with MPR reconstruction technology can better display the accompanied sinus/fistula, which play an important guiding role in clinical diagnosis , treatment and prevention of recurrence.

Key words: First branchial cleft cyst, Sinus, Fistula, Computed tomography, Multiplanner reformation

CLC Number:

R739.8

ZHU Dan, CHEN Pei-qian, SUN Jing-jing, TAO Xiao-feng, ZHU Ling. Correlation analysis of imaging features and clinicopathological features in 53 cases of first branchial cleft cyst[J]. China Journal of Oral and Maxillofacial Surgery, 2021, 19(1): 22-28.

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