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| Year : 2015 | Volume
: 32
| Issue : 4 | Page : 230-233 |
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| The utility of ROSE (rapid on-site evaluation) in endobronchial ultrasound (EBUS)-guided transbronchial needle aspiration (TBNA): Is the picture rosy? |
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Varuna Mallya1, Sandeep P Kumar1, Prabhu Meganathan2, Swarna Shivkumar2, Ravindra Mehta3
1 Department of Pathology, Dr. BR Ambedkar Medical College, Bengaluru, Karnataka, India
2 Department of Pathology, Apollo Hospital, Bengaluru, Karnataka, India
3 Department of Pulmonology, Apollo Hospital, Bengaluru, Karnataka, India
Click here for correspondence address and email
| Date of Web Publication | 8-Dec-2015 |
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 Abstract | | |
Background: Mediastinal lymphadenopathy (ML) presents a diagnostic challenge. The technique to sample the lymph nodes has evolved from conventional "blind" transbronchial needle aspiration (TBNA) to the present day endobronchial ultrasound (EBUS)-guided procedure that improves the accuracy of sampling.
Objective: This study was undertaken to evaluate the utility of "rapid on-site evaluation" (ROSE) in EBUS-guided TBNA (EBUS-TBNA) for the diagnosis of ML.
Patients and Methods: This prospective study included 80 patients who underwent EBUS-TBNA for computed tomography/positron emission tomography (CT/PET) diagnosed ML over a 4-month period at a single tertiary care center. All 80 of these patients underwent histopathological evaluation (HPE) in addition to cytology. Three out of these 80 (3.7%) patients were excluded in view of inadequate material on EBUS-TBNA. After the sampling of nodes was done, the slides were stained with rapid hematoxylin and eosin (H&E) and then on-site evaluation was done. The tissue derived was also processed for HPE in all cases.
Results: ROSE revealed granuloma in 27 patients and malignancy in 14 patients, and the remaining patients showed nonspecific inflammation. Concomitant histopathology revealed granuloma in 34 patients and malignancy in 14 patients. Considering HPE as gold standard, the overall sensitivity and specificity of EBUS-TBNA for diagnosis were 85.4% and 89.6%, respectively. For malignancy alone, the sensitivity and specificity were 100% and 98.4%, respectively.
Conclusion: This novel approach is safe, has good diagnostic yield, and has an excellent potential in assisting safe and accurate diagnostic interventional bronchoscope. Keywords: Endobronchial ultrasound (EBUS), mediastinoscopy, rapid on-site evaluation (ROSE), transbronchial needle aspiration (TBNA)
How to cite this article:
Mallya V, Kumar SP, Meganathan P, Shivkumar S, Mehta R. The utility of ROSE (rapid on-site evaluation) in endobronchial ultrasound (EBUS)-guided transbronchial needle aspiration (TBNA): Is the picture rosy?. J Cytol 2015;32:230-3 |
How to cite this URL:
Mallya V, Kumar SP, Meganathan P, Shivkumar S, Mehta R. The utility of ROSE (rapid on-site evaluation) in endobronchial ultrasound (EBUS)-guided transbronchial needle aspiration (TBNA): Is the picture rosy?. J Cytol [serial online] 2015 [cited 2023 Mar 28];32:230-3. Available from: https://www.jcytol.org/text.asp?2015/32/4/230/171226 |
| Introduction | |  |
Mediastinal lymphadenopathy (ML) presents a diagnostic challenge. Infections, granulomatous diseases, reactive hyperplasias, and malignancies can cause enlargement of the mediastinal lymph nodes. [1] These nodes need to be sampled to reach a diagnostic conclusion. Various techniques are available to sample the lymph nodes, these include blind conventional bronchoscopic transbronchial needle aspiration (TBNA), transesophageal ultrasound-guided needle aspiration, computed tomography (CT)-guided transthoracic needle aspiration, and mediastinoscopy. [1],[2] Most of these techniques come with certain drawbacks, namely need for general anesthesia, low yield, and poor accessibility. [1] Endobronchial ultrasound-guided TBNA (EBUS-TBNA) is the most recent advancement in the field of pulmonary medicine, and it has revolutionized the scene for the pathologist and pulmonologist. TBNA is performed real time under direct visualization of the needle using simultaneous ultrasound (USG) and optical imaging. [3] A Doppler mode is used that allows vascular structures to be visualized, and the accurate localization of lymph node stations can be done. This technique uses a 21-gauge needle and allows for procurement of material for cytology and histopathology simultaneously. ROSE or rapid on-site evaluation of the cytology aspirate is done, which improves the diagnostic yield and aids in clinical decision-making. [2] Our study was first of its kind in the Indian scenario and was done to evaluate the utility of ROSE in EBUS-TBNA for the diagnosis of ML. We sought to specifically address two questions:
- Does ROSE EBUS-TBNA give the same adequacy and accuracy of sampling as the gold standard that is histopathology?
- If yes, does it affect the clinical decision-making?
| Patients and Methods | | |
This was a prospective single-center study conducted at a superspecialty hospital in Bangalore. Eighty patients, who underwent EBUS-TBNA for CT/PET and were diagnosed with ML over a 5-month period from February 2014 to June 2014, were included in this study. A 21-gauge needle was used to puncture the lymph nodes. After sampling the nodes, slides were stained with rapid H&E and ROSE was done. The material was also procured for histopathology in each case. The assessment for the sample adequacy was performed as follows: It was based on counting the lymphocyte numbers in the most cellular areas under 40× magnification. A score of 0 was given if the number of lymphocytes was below 40, a score of 1 was given if the number of lymphocytes were between 41 and 200. A score of 2 was given if the number of lymphocytes was more than 200 and a score of 3 was allotted if there were more than 200 lymphocytes noted in the confluent sheets with or without germinal center formation [Table 1]. [4] | Table 1: Criteria adopted for assessing the adequacy of sampling in slide
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| Results | | |
Of the 80 cases, 3 (3.7%) were excluded in view of inadequate material on EBUS-TBNA. Of the 77 cases, 49 were males and 28 were females. The average age of the patients was 54 years. An average time of 34 min was spent on each case. Mostly, 3-5 passes were made into each node and around 3-7 slides were made from each station. The most common lymph node to be sampled was station 7 followed by station 4R [Table 2]. Of the 77 patients examined on site, a diagnosis of malignancy was given for 14 cases [Figure 1]a and b, granuloma [Figure 1]c for 27 cases, and nonspecific lymphadenitis for 36 cases [Table 3]. | Figure 1: (a) Cytology image showing atypical lymphoid cells (H and E, ×400). (b) Granuloma composed of epithelioid cells seen (H and E, ×400). (c) Atypical cells, some of which are forming glands (H and E, ×40)
Click here to view |
Histopathology slides from all the 77 patients were examined and it was seen that all 14 cases that were positive for malignancy on cytology were also found to be malignant on histopathology [Figure 2]a and b. Granulomas were identified in 34 cases and nonspecific lymphadenitis was the diagnosis in 29 cases [Table 4]. The most common malignancy in our study was adenocarcinoma [Table 5]. The overall sensitivity was 85.4% and specificity was 89.6%. | Figure 2: (a) Small cell carcinoma-histopathology image showing cells with scant cytoplasm, enlarged hyperchromatic nuclei, and nuclear molding (H and E, ×400). (b) Squamous cell carcinoma-large cells with eosinophilic cytoplasm, pleomorphic vesicular nuclei, and prominent nucleoli forming whorls (H and E, ×400)
Click here to view |
| Discussion | | |
EBUS-TBNA is a fairly new technique. ROSE EBUS-TBNA is a useful technique that has revolutionized the field of pulmonology. Developed initially for detecting metastasis in lung cancer patients, it is currently used in the diagnosis of sarcoidosis, tuberculosis (TB), and lymphoma. [5] ROSE, which has been a game changer for the pathologists, helps to act as a guide for assessing the adequacy and accuracy of the sample and aid in rapid decision-making. [6],[7] Our study was a prospective study where we studied 80 cases. Three out of 80 were excluded in view of inadequate sample. We obtained a sample adequacy of 96.3% that was comparable to Yasafuko et al., who also reported an adequacy of 96%. [2] Alsharif et al. reported a sample adequacy of 84.3%. [4]
Of the 77 patients, 49 were males and 28 were females with a male-to-female ratio of 1.7. The average age of the patients in our study was 54 years that was much less as compared to Alsharif et al. [4] and Chhajed et al. [3] who reported the average age of their patients as 61 years and 66 years, respectively. An average time of 34 min was spent on each case. This was higher than reported in previous studies. [4] Mostly, 3 to 5 passes were made into each node. This was in concordance with the earlier studies. [2],[4] The most common lymph node to be sampled was station 7 which was the case in studies of Alsharif et al. [4] A dedicated 22-gauge needle was inserted through the working channel of the bronchoscope and lymph nodes were punctured under real-time guidance. Slides were fixed in alcohol and stained by rapid H&E for on-site evaluation and simultaneously material was sent for histopathology.
Of the 77 cases, an on-site diagnosis of malignancy was given in 14 cases. The most common malignancy in our study was adenocarcinoma. Parmaksiz et al. also reported adenocarcinoma as the most important malignancy in their study. [8] Granuloma composed of epithelioid cells was noted in 24 out of 77 cases and a diagnosis of nonspecific lymphadenitis was given in 36 cases. When histopathology slides were examined, all 14 cases found positive for malignancy on cytology also turned out to be positive on histopathology. Hence, the concordance in this case was 100%. Granulomas were identified in 34 cases. With histopathology as the gold standard, [4] the sensitivity and specificity in our study were 84.4% and 89.6%, respectively. Yasufuku et al. reported higher sensitivity and specificity of 95.7% and 100%, respectively. [2]
A sensitivity of 95% and specificity of 100% was reported by Ye et al. [9] Al sharif et al. [4] and Parmaksiz et al. [8] reported sensitivity and specificity of 89.2% and 100% respectively.
EBUS-TBNA is a new technique that allows for cytological sampling of lymph nodes. Cytology and histopathology samples can be procured in the same sitting. ROSE facilitates sample adequacy and also aids in rapid clinical decision-making. It equals the gold standard, that is, histopathology by mediastinoscopy in sensitivity and specificity for diagnosis of ML. [7] This technique can also be used to procure samples for molecular analysis. Hence, this novel approach is safe, has good diagnostic yield and has an excellent potential in assisting safe and accurate diagnostic interventional bronchoscope. The picture indeed is rosy.
Financial support and sponsorship
Nil.
Conflicts of interest
There are no conflicts of interest.
| References | | |
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| 2. | Yasukufu K, Chiyo M, Sekine Y, Chhajed PN, Shibuya K, Iizasa T, et al. Real-time endobronchial ultrasound-guided transbronchial needle aspiration of mediastinal and hilar lymph nodes. Chest 2004;126:122-8. |
| 3. | Chhajed PN, Odermatt R, von Garnier C, Chaudhari P, Leuppi JD, Stolz D, et al. Endobronchial ultrasound in hilar and conventional TBNA-negative/inconclusive mediastinal lymphadenopathy. J Cancer Res Ther 2011;7:148-51. |
| 4. | Alsharif M, Andrade RS, Groth SS, Stelow EB, Pambuccian SE. Endobronchial ultrasound-guided transbronchial fine-needle aspiration: The University of Minnesota experience, with emphasis on usefulness, adequacy assessment, and diagnostic difficulties. Am J Clin Pathol 2008;130:434-43. |
| 5. | Eapen GA, Shah AM, Lei X, Jimenez CA, Morice RC, Yarmus L, et al. Complications, consequences and practice patterns of endobronchial ultrasound guided transbronchial needle aspirations: Results of AQUIRE registry. Chest 2012;1:122-8. |
| 6. | Griffin AC, Schwartz LE, Baloch ZW. Utility of on-site evaluation of endobronchial ultrasound-guided transbronchial needle aspiration specimens. Cytojournal 2011;8:20. [ PUBMED]  |
| 7. | Guarize J. Endobronchial ultrasound: From lung cancer diagnosis and staging to translational research. J Bras Pneumol 2013;39:119-20. [ PUBMED] |
| 8. | Parmaksiz ET, Caglayam B, Salepci B, Comert SS, Kiral N, Fidan A, et al. The utility of endobronchial ultrasound guided transbronchial needle aspiration in mediastinal or hilar lymph node evaluation in extrathoracic malignancy: Benign or Malignant? Ann Thorac Med 2012;7:210-4. [ PUBMED] |
| 9. | Ye T, Hu H, Luo X, Chen H. The role of endobronchial ultrasound guided transbronchial needle aspiration (EBUS-TBNA) for qualitative diagnosis of mediastinal and hilar lymphadenopathy: A prospective analysis. BMC Cancer 2011;11:100. |
Correspondence Address:
Varuna Mallya
Department of Pathology, Dr. BR Ambedkar Medical College, Kadugondanahalli, Bengaluru - 560 045, Karnataka
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0970-9371.171226
[Figure 1], [Figure 2]
[Table 1], [Table 2], [Table 3], [Table 4], [Table 5] |
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