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Standardized intrapulmonary lymph node dissection in lung cancer specimens: A national Colombian analysis
Habib Jussef Mantilla Gaviria1, Stella Isabel Martinez Jaramillo2, Carlos Andrés Carvajal Fierro2,3
1Thoracic Surgery Department, Clínica Cancerológica de Boyacá, Tunja, Colombia.
JTCVS Open
|September 19, 2024
Summary
Accurate staging of non-small cell lung cancer (NSCLC) requires evaluating intrapulmonary lymph nodes (IPLNs). Fresh-specimen dissection of IPLNs in Colombia improved pathological staging and patient selection for adjuvant therapy.
Area of Science:
- Oncology
- Pathology
- Surgical Oncology
Background:
- Accurate staging of non-small cell lung cancer (NSCLC) is crucial for treatment planning.
- Intrapulmonary lymph nodes (IPLNs) are important for N staging but are often overlooked in Colombian centers, leading to understaging.
- Understaging of NSCLC can result in suboptimal treatment strategies.
Purpose of the Study:
- To assess the feasibility and impact of intrapulmonary lymph node (IPLN) dissection on pathological staging in Colombian patients with non-small cell lung cancer (NSCLC).
- To determine if IPLN assessment can improve the accuracy of N staging and guide adjuvant therapy selection.
Main Methods:
- A prospective study involving 100 patients with clinical stage I or II NSCLC undergoing surgical resection.
- Intrapulmonary lymph node (IPLN) dissection was performed on fresh specimens by trained surgeons.
- Histopathologic analysis of collected IPLNs was conducted to determine nodal status.
Main Results:
- Successful sampling and analysis of at least one IPLN station was achieved in 85% of patients.
- Overall upstaging occurred in 9% due to positive N2 nodes and 5% due to positive N1 nodes.
- Among patients initially staged as pN0 or pN1, 3.2% were upstaged exclusively due to positive IPLNs.
Conclusions:
- Fresh-specimen dissection for IPLN collection is a feasible and appropriate method for enhancing pathological staging accuracy in Colombian NSCLC patients.
- IPLN dissection is particularly valuable for optimizing the selection of patients for adjuvant therapy, especially in those with clinical N0 disease.
