Lung Adenocarcinoma
Conditions
Brief summary
This study aims to evaluate the non-inferiority in recurrence-free survival and overall survival of segmentectomy compared with lobectomy in patients with lung adenocarcinoma ≤ 2 cm with micropapillary and solid subtype negative by intraoperative frozen sections.
Detailed description
At present, the technology of intraoperative frozen section has gradually matured, which can diagnose the benign and malignant tumors and guide the resection strategy for peripheral small-sized lung adenocarcinoma. Travis et al. reported high specificity of intraoperative frozen section in the identification of micropapillary components, confirming that intraoperative frozen section may guide the selection of surgical procedures. However, there is still little evidence weather segmentectomy is appropriate for invasive adenocarcinoma without micropapillary patterns. This prospective and multi-center study was aimed to evaluate the non-inferiority in recurrence free survival and overall survival of segmentectomy compared with lobectomy in patients with lung adenocarcinoma (≤ 2 cm) not including micropapillary components.
Interventions
PROCEDURESegmentectomy
Segmentectomy with hilar and mediastinal lymph node dissection is performed. If the tumor located at inter-segment plane and without sufficient resection margin distance, a combined segmentectomy will be performed. Systemic or selective lymph node dissection is mandatory, and nodal sampling is not allowed. At least three stations of mediastinal lymph node from 2R, 4R, 7, 8, 9 for the right side and 5, 6, 7, 8, 9 for the left side, respectively. The distance from the dissection margin to the tumor edge must be evaluated intra-operatively. If the distance is either less than the maximum tumor diameter or 20 mm, the absence of cancer cells in the resection margin must be histologically or cytologically confirmed before finishing surgery.
PROCEDURELobectomy
Lobectomy with hilar and mediastinal lymph node dissection is performed. Segmentectomy with hilar and mediastinal lymph node dissection is performed. Systemic or selective lymph node dissection is mandatory, and nodal sampling is not allowed. At least three stations of mediastinal lymph node from 2R, 4R, 7, 8, 9 for the right side and 5, 6, 7, 8, 9 for the left side, respectively. The distance from the dissection margin to the tumor edge must be evaluated intra-operatively. If the distance is either less than the maximum tumor diameter or 20 mm, the absence of cancer cells in the resection margin must be histologically or cytologically confirmed before finishing surgery.
Sponsors
Shanghai Pulmonary Hospital, Shanghai, China
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Masking description
no masking
Intervention model description
segmentectomy group versus lobectomy group
Eligibility
Sex/Gender
ALL
Age
20 Years to 79 Years
Healthy volunteers
No
Inclusion criteria
* Patient aged 20-79 years old, both male or female; * Tumor size \<= 2cm on preoperative CT scan; * Peripheral solitary nodule or the associated lesion is MIA or less invasive lesion; * Preoperative CT indicated that the nodules were non-pure glass nodules (consolidation to tumor ratio \>= 0.25); * Intraoperative frozen section confirmed invasive lung adenocarcinoma with micropapillary and solid subtype negative (\<= 5%); * Intraoperative frozen section indicated the resection margins was free of tumor cells; * Lung function could withstand both lung segmentectomy and lobectomy (FEV1 \> 1.5L or FEV1% \>= 60%); * Eastern Cooperative Oncology Group, 0 to 2; * Volunteer to participate the trial and sign the informed consent, able to comply with the follow-up plan and other program requirements.
Exclusion criteria
* Radiological pure ground glass nodules (consolidation to tumor ratio \< 0.25); * The nodule is close to the lung hilus and is unable to perform segmentectomy; * Intraoperative frozen section confirmed with micropapillary and solid subtype positive (\> 5%); * Intraoperative frozen section confirmed adenocarcinoma in situ and minimally invasive adenocarcinoma; * Preoperative imaging examination or EBUS indicated lymph node positive metastasis; * Preoperative imaging examination revealed distant metastasis; * Patients with severe damage to heart, liver and kidney function (grade 3 \~ 4, ALT and/or AST over 3 times the normal upper limit, Cr over the normal upper limit); * Patients with other malignant tumors; * Pregnant, planned pregnancy and lactating female patients (urine HCG\>2500IU/L is diagnosed as early pregnancy); * Prior chemotherapy, radiation therapy or any other therapies were performed; 12 participated in other tumors within three months of relevant clinical subjects; * Those who have participated in other tumor-related clinical trials within three months; * Those are not suitable for participating in trials according to investigator's assessment.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| recurrence-free survival rate | 5 year | Recurrence-free survival (RFS) was defined as the time from surgery until recurrence or death from any cause |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| overall survival | 5 year | Overall survival (OS) was defined as the time from surgery until death from any cause |
| Post-operative respiratory function | 6 months | The post-operative respiratory function will be evaluated by FEV1% and FVC. |
| Operation time | 24 hours | The surgery time in both groups. |
| Blood loss | 24 hours | Intraoperative blood loss in total. |
| Perioperative morbidity or mortality | 1 month | Any intraoperative and postoperative complications related to the surgery. |
Countries
China
Contacts
CONTACTHang Su
CONTACTChang Chen, MD, PhD
PRINCIPAL_INVESTIGATORChang Chen, MD, PhD
Shanghai Pulmonary Hospital, School of Medicine, Tongji University
Outcome results
None listed