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Published Research

Dr. Chhajed has authored more than 160 PubMed Indexed publications across interventional pulmonology, lung transplantation, sleep medicine, and tuberculosis — published in journals including the New England Journal of Medicine, Chest, Thorax, and the European Respiratory Journal. Below is a selection organized by theme.

Foundational

The original papers that introduced EBUS-TBNA into clinical practice.

Yasufuku K, Chiyo M, Sekine Y, Chhajed PN, et al. Real-time endobronchial ultrasound-guided transbronchial needle aspiration of mediastinal and hilar lymph nodes. Chest. 2004;126(1):122–128.
Yasufuku K, Chhajed PN, Sekine Y, et al. Endobronchial ultrasound using a new convex probe: a preliminary study on surgically resected specimens. Oncology Reports. 2004;11(2):293–296.

Safety & Diagnostic Accuracy

Evidence establishing EBUS-TBNA's diagnostic yield and safety profile.

Vaidya PJ, Saha A, Kate AH, et al. Diagnostic value of core biopsy histology and cytology sampling of mediastinal lymph nodes using 21-gauge EBUS-TBNA needle. J Cancer Res Ther. 2016;12(3):1172–1177.
Vaidya PJ, Munavvar M, Leuppi JD, Mehta AC, Chhajed PN. Endobronchial ultrasound-guided transbronchial needle aspiration: Safe as it sounds. Respirology. 2017;22(6):1093–1101.
Chhajed PN, Odermatt R, von Garnier C, et al. Endobronchial ultrasound in hilar and conventional TBNA-negative/inconclusive mediastinal lymphadenopathy. J Cancer Res Ther. 2011;7(2):148–151.

National & International Guidelines

Dr. Chhajed's role in defining the standard of care, alongside the international guidelines that established EBUS-TBNA as first-line for mediastinal staging.

Mohan A, Madan K, Hadda V, et al. Guidelines for endobronchial ultrasound-transbronchial needle aspiration (EBUS-TBNA): Joint Indian Chest Society (ICS)/Indian Association for Bronchology (IAB) recommendations. Lung India. 2023;40(4):368–400.
Silvestri GA, Gonzalez AV, Jantz MA, et al. Methods for staging non-small cell lung cancer: ACCP evidence-based clinical practice guidelines (3rd ed). Chest. 2013;143(5 Suppl):e211S–e250S.
De Leyn P, Dooms C, Kuzdzal J, et al. Revised ESTS guidelines for preoperative mediastinal lymph node staging for non-small-cell lung cancer. Eur J Cardiothorac Surg. 2014;45(5):787–798.
Postmus PE, Kerr KM, Oudkerk M, et al. Early and locally advanced non-small-cell lung cancer (NSCLC): ESMO Clinical Practice Guidelines. Ann Oncol. 2017;28(suppl_4):iv1–iv21.
National Comprehensive Cancer Network. NCCN Clinical Practice Guidelines in Oncology: Non-Small Cell Lung Cancer. Available at NCCN.org.

Oncology Applications

Mediastinal staging and diagnostic accuracy in lung cancer and mediastinal malignancy.

Vaidya PJ, Kate AH, Yasufuku K, Chhajed PN. Endobronchial ultrasound-guided transbronchial needle aspiration in lung cancer diagnosis and staging. Expert Rev Respir Med. 2015;9(1):45–53.
Dhooria S, Mehta RM, Madan K, et al. A Multicenter Study on the Utility of EBUS-TBNA and EUS-B-FNA in the Diagnosis of Mediastinal Lymphoma. J Bronchology Interv Pulmonol. 2019;26(3):199–209.
Subramanian S, Sandeepa HS, Chaudhari P, et al. Mediastinal lymphadenopathy in malignancy: metastatic or granulomatous? J Assoc Physicians India. 2014;62(7):630–632.

Tuberculosis & Infectious Disease

India-specific and immunocompromised-population applications of EBUS-TBNA.

Chhajed PN, Vaidya PJ, Mandovra N, et al. EBUS-TBNA in the rapid microbiological diagnosis of drug-resistant tuberculous mediastinal lymphadenopathy. ERJ Open Research. 2019;5(4):00008-2019.
Agrawal N, Vaidya PJ, Chhajed PN. Endobronchial ultrasound transbronchial needle aspiration (EBUS-TBNA) in HIV affected individuals: Is the (E)BUS ready for unchartered territories? Lung India. 2018;35(5):371–372.

21-Year Retrospective

A reflection on the technique's evolution.

Vaidya PJ, Chhajed PN. A Needle through Time: Celebrating 21 Years of Endobronchial Ultrasound-guided Transbronchial Needle Aspiration in Pulmonary Medicine! J Assoc Physicians India. 2026; doi: 10.59556/japi.74.1710.
Complete publication list
View all 160+ publications on PubMed.
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