Dr. Ranjan Kumar Das is a highly respected senior Pulmonologist and Interventional Respiratory Specialist with more than 36 years of clinical, academic, and research experience. Known for his pioneering work in bronchoscopy and pleuroscopy, he combines vast clinical expertise with compassionate patient care. His lifelong dedication to education, research, and innovation has significantly advanced respiratory medicine in India.

Educational Qualifications:

• MBBS – Maulana Azad Medical College, New Delhi (1976)
• MD (Tuberculosis & Respiratory Diseases) – University of Delhi (1982)
• DMRD – University of Calcutta (1986)

Professional Experience:

• Consultant – Pulmonology, Manipal Hospitals, E.M. Bypass, Kolkata
• Over three decades of extensive experience in Respiratory & Pulmonary Medicine
• Treated patients nationally and internationally for complex pulmonary disorders
• Expertise in advanced interventional pulmonology procedures
• Dissertation Guide – DNB Family Medicine students
• Actively involved in academic teaching, research, and national & international conferences

Awards:

• Worked on the project "Evaluation of Bumetanide as a Diuretic" as Jr. Research Officer for 4 months, January 1979-April 1979.
• Submitted thesis entitled "Patterns of Onset of Childhood Asthma & Their Response to Appropriate Treatment" to the University of Delhi for partial fulfilment of the requirement for MD (Tuberculosis & Respiratory Diseases) in 1980.
• Removal of an Endobronchial Foreign body by a Fibreoptic bronchoscope. 8th National Update on Flexible Fibreoptic Bronchoscopy, Bangalore 1994.
• Role of Fibreoptic Bronchoscope in Chest Diseases. 11th West Bengal State Tuberculosis & Chest Diseases worker's Conference 1995.
• Role of Fibreoptic Bronchoscopy in Collapse of A segment, Lobe or Whole Lung, Eastern Zonal Conference of the Association of Physicians of India, 1995.
• Fibreoptic Bronchoscopy - its use: the Indian Perspective. Update in Respiratory Medicine, Institute of Respiratory Diseases, 1995.
• Fiberoptic Bronchoscopy_ The Agony and the Ecstasy. 2nd National Conference on Bronchology 1996.
• Life Saving Laser Ablation in a case of Pleomorphic Adenoma of the Bronchus Causing Respiratory Distress. Annual Conference of Cardiothoracic Surgeons, Jaipur, 1999.
• Role of Fiberoptic Bronchoscopy in Pulmonary Diseases, Dr. M.L. Rakshit Memorial Oration, India Medical Association, Chadernagore, 1999.
• Role of Transbronchial Lung Biopsy in patients presenting with Bilateral Interstitial Pulmonary Diseases - Analysis of Result in 62 cases. National Conference on Pulmonary Diseases (NAPCON), Kanpur, 2000.
• Transbronchial Lung Biopsy & Transbronchial Needle Aspiration, 55th National Conference on Tuberculosis & Chest Diseases. Calcutta, 2000.
• Diffuse Lung Diseases - Infective & Non-Infective Causes, with Special Reference to the role of Transbronchial lung biopsy. Fourth Annual Conference of the Association of Chest Physicians, West Bengal, Calcutta, 2001.
• Tracheobronchial Foreign Bodies: Role of the Fiberoptic Bronchoscope. 16th Asia Pacific Congress on Diseases of the Chest, Mumbai, 2001.
• Use of Upper Gastrointestinal Endoscopic Biopsy Forceps for Bronchial and Transbronchial Lung Biopsy, and Comparison of Tissue Yield and Complication with that of Standard Bronchoscopy Forceps, 16th Asia Pacific Congress on Diseases of the Chest, 2001.
• Protected Pleural Aspiration Needle For Safer Pleural Aspiration. Ranjan K Das Paper Presentation in 4th Asian Pacific Congress on Bronchology and Interventional Pulmonology, 19th-22nd January 2012, Jaipur.
• Tree-in-bud sign in Chest CT- a Fishy Cause. R.Das, S. Unnithan, R. Mallik Poster Presentation at 69th Annual Conference of the Association of Physicians of India, 20th-23rd February 2014, Ludhiana, Punjab.
• Pleuroscopy -7 Years Experience in a Tertiary Care Hospital in Kolkata. R.Das, S.Unnithan. Paper Presented at 69th Annual Conference of The Association of the Physicians of India, 20th - 23rd February 2014, Ludhiana, Punjab.
• Sequestrated Lung Presenting as Lung Abscess. R Das, S Unnithan Paper Presented at 69th Annual Conference of the Association of Physicians of India 20th -23rd February 2014 Ludhiana, Punjab.
• An Observational Study of Daytime Hypersomnolence and Obstructive Sleep Apnea in Ischemic Heart Disease Patients Admitted in ICU/ICCU with Various Complications after Stabilisation in a Tertiary Care Hospital in Eastern India. Manali Bhattacharya, Ranjan Kumar Das. Paper presented at the Platinum APICON 2015, 18th-21st February 2015, Gurgaon.
• 2019 - Lifetime Achievement Award - conferred by the Indian Association for Bronchology
• 2024 - Inspiring Respiratory Specialists of India - conferred by Times Now"

Publications:

• Tuberculosis - Historical Landmarks. Ranjan K Das, J India Med Assoc, vol98, no 3 March 2000.
• Malignant Melanoma of the Bronchus, Ranjan K Das, Asok Dasgupta, Sanjiv Tewari, Atul C Mehta, J of Bronchology, 5:59-60, 1998.
• Tracheal Amyloidosis Presenting with Hemoptysis. Priya M, Das R.K., Mukherjee S. Hamdan Med J 2019;12 134-6.
• Guidelines for Diagnostic Flexible Bronchoscopy in Adults: Joint Indian Chest Society /National College Of Chest Physicians (1)/ Indian Association for Bronchology Recommendations. A. Mohan et al. Lung India 2019 July; 36 (Suppl 2) 537-589.
• Pleuroscopy: Eight Years of experience in a Tertiary Care Hospital in Kolkata, India. Sivaresmi Unnithan, Ranjan K Das, Don S Halliday. Thoracic Endoscopy 2016; 1 23-29.
• The Dilemmas of Treating Pulmonary Alveolar Proteinosis: Diagnostic and Therapeutic Implications: A Case Report. Med Case Rep. 2015, 1:5.
• Worked on the project "Evaluation of Bumetanide as a Diuretic" as Jr. Research Officer for 4 months, January 1979-April 1979.
• Submitted thesis entitled "Patterns of Onset of Childhood Asthma & Their Response to Appropriate Treatment" to the University of Delhi for partial fulfilment of the requirement for MD (Tuberculosis & Respiratory Diseases) in 1980.
• Removal of an Endobronchial Foreign body by a Fibreoptic bronchoscope. 8th National Update on Flexible Fibreoptic Bronchoscopy, Bangalore 1994.
• Role of Fibreoptic Bronchoscope in Chest Diseases. 11th West Bengal State Tuberculosis & Chest Diseases Workers' Conference 1995.
• Role of Fibreoptic Bronchoscopy in Collapse of A segment, lobe or Whole lung, Eastern Zonal Conference of the Association of Physicians of India, 1995.
• Fibreoptic Bronchoscopy - its use: the Indian Perspective. Update in Respiratory Medicine, Institute of Respiratory Diseases, 1995.
• Fiberoptic Bronchoscopy_ The Agony and the Ecstasy. 2nd National Conference on Bronchology 1996.
• Life Saving Laser Ablation in a case of Pleomorphic Adenoma of the Bronchus Causing Respiratory Distress. Annual Conference of Cardiothoracic Surgeons, Jaipur, 1999.
• Role of Fiberoptic Bronchoscopy in Pulmonary Diseases, Dr. M.L. Rakshit Memorial Oration, India Medical Association, Chadernagore, 1999.
• Role of Transbronchial Lung Biopsy in patients presenting with Bilateral Interstitial Pulmonary Diseases - Analysis of Result in 62 cases. National Conference on Pulmonary Diseases (NAPCON), Kanpur, 2000.
• Transbronchial Lung Biopsy & TransBronchial Needle Aspiration, 55th National Conference on Tuberculosis & Chest Diseases. Calcutta, 2000.
• Diffuse Lung Diseases - Infective & Non-Infective Causes, with Special Reference to the role of Transbronchial lung biopsy. Fourth Annual Conference of the Association of Chest Physicians, West Bengal, Calcutta, 2001.
• Tracheobronchial Foreign Bodies: Role of the Fiberoptic Bronchoscope. 16th Asia Pacific Congress on Diseases of the Chest, Mumbai, 2001.
• Use of Upper Gastrointestinal Endoscopic Biopsy Forceps for Bronchial and Transbronchial Lung Biopsy, and Comparison of Tissue Yield and Complication with that of Standard Bronchoscopy Forceps, 16th Asia Pacific Congress on Diseases of the Chest, 2001.
• Protected Pleural Aspiration Needle For Safer Pleural Aspiration. Ranjan K Das Paper Presentation in 4th Asian Pacific Congress on Bronchology and Interventional Pulmonology, 19th-22nd January 2012, Jaipur.
• Tree-in-bud sign in Chest CT- a Fishy Cause. R.Das, S. Unnithan, R. Mallik Poster Presentation at 69th Annual Conference of the Association of Physicians of India, 20th-23rd February 2014, Ludhiana, Punjab.
• Pleuroscopy -7 Years Experience in a Tertiary Care Hospital in Kolkata. R.Das, S.Unnithan. Paper Presented at 69th Annual Conference of The Association of the Physicians of India, 20th - 23rd February 2014, Ludhiana, Punjab.
• Sequestrated Lung Presenting as Lung Abscess. R Das, S Unnithan Paper Presented at 69th Annual Conference of the Association of Physicians of India, 20th -23rd February 2014, Ludhiana, Punjab.
• An Observational Study of Daytime Hypersomnolence and Obstructive Sleep Apnea in Ischemic Heart Disease Patients Admitted in ICU/ICCU with Various Complications after Stabilisation in a Tertiary Care Hospital in Eastern India. Manali Bhattacharya, Ranjan Kumar Das. Paper presented at the Platinum APICON 2015, 18th-21st February 2015, Gurgaon.

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