Comparison between intercostal and diaphragmatic flap in the surgical treatment of early bronchopleural fistula

Pericardial flap: an effective method of surgical repair of late post-pneumonectomy fistula

BACKGROUND

We report our experience with the surgical closure of late post-pneumonectomy bronchopleural fistula (PBF) using our own method of coverage of the bronchial stump: Pedicled pericardial flap in combination with fibrin glue.

METHODS

We reviewed the surgical results of 33 patients who underwent surgical closure of PBF by thoracotomy access using three methods: Myoplasty (MYO)-12, omentoplasty (OMT)-10, and pedicled pericardial flap (PPF) with fibrin glue-11. Post-operative follow up was six months.

RESULTS

The patients' demography was comparable among the groups. The diameter of the fistulas ranged from 5 mm to total dehiscence. The mean time of the fistula manifestation (in weeks) was 21.5 in the MYO group, 19.50 in the OMT, and 20.1 in the PPF group. The shortest period of hospital drainage of the pleural space was noted in the PPF group. Healing of the fistula was obtained in 66.67% in the MYO group, 80% in the OMT, and 100% in the PPF group. The number of complications was similar in all groups. The hospitalization time was significantly shorter in the PPF group (13.00 d) versus the MYO group (19.58 d) and the OMT (20.01 d). Overall mortality rate was 18.18%; 33.33% of the patients in the MYO group and 20% in the OMT group died. There were no hospital deaths in the PPF group.

CONCLUSION

Pericardial flap supported by fibrin glue can be an effective method adjunctive to the treatment of postpneumonectomy PBF in selected patients. Compared with other methods of bronchial stump coverage (omentopasty and myoplasty), this one showed a higher percentage of healing of the fistulas and shorter duration of hospital drainage and hospitalization.

Bronchial Stump Coverage and Postpneumonectomy Bronchopleural Fistula

To prevent postpneumonectomy bronchopleural fistula, coverage of the bronchial stump is recommended, especially for patients treated with neoadjuvant and adjuvant chemotherapy or radiochemotherapy. We compared outcomes after proximal pericardial fat pad coverage and coverage with pleura and surrounding tissues, by retrospective analysis of the records of 243 patients. Postpneumonectomy bronchopleural fistula occurred in 7/143 (4.9%) patients who had pericardial fat pad coverage, and in 6/100 (6.0%) treated by pleural covering. Bronchopleural fistula occurred in 11 patients within 21 days, in one after 2 months, and one after 6 months. Univariate analysis of comorbidities and risk factors did not show any significant differences between the groups. Advanced T stage and carcinomatous lymphangiosis at the resection margin were associated with a higher risk of bronchopleural fistula development, independent of the technique. Reinforcement of the bronchial stump by proximal pericardial fat pad coverage appears to be safe and feasible. It is comparable to coverage with pleura and surrounding tissues.

[Isolated lymph node metastasis in pericardial fat flap after bronchial stump coverage]

The occurrence of bronchopleural fistulas is a serious complication after pneumonectomy because of lung cancer and additional bronchial stump coverage within right-sided and left-sided pneumonectomy therefore constitutes the operative standard. This is a case report on the early diagnosis of a lymph node metastasis within the pedicled pericardial fat flap used for bronchial stump coverage. Primary resection of the left lung was carried out 8 months previously because of cancer. Early diagnosis was possible using FDG-PET/CT in the post-operative treatment. The recurrence was successfully treated by en bloc resection and adjuvant radiation.