Annals of Thoracic Medicine
LETTER TO THE EDITOR
Year
: 2013  |  Volume : 8  |  Issue : 2  |  Page : 128--129

Comments on the utility of endorbonchial ultrasound-guided transbronchial needle aspiration in mediastinal or hilar lymph node evaluation in extrathoracic malignancy: Benign or malignant?


Asmita Mehta, Kshama Madhavi 
 Department of Pulmonary Medicine, Amrita Institute of Medical Sciences, Ponekkara, Kochi, Kerala, India

Correspondence Address:
Asmita Mehta
Department of Pulmonary Medicine, Amrita Institute of Medical Sciences, Ponekkara, Kochi, Kerala
India




How to cite this article:
Mehta A, Madhavi K. Comments on the utility of endorbonchial ultrasound-guided transbronchial needle aspiration in mediastinal or hilar lymph node evaluation in extrathoracic malignancy: Benign or malignant?.Ann Thorac Med 2013;8:128-129


How to cite this URL:
Mehta A, Madhavi K. Comments on the utility of endorbonchial ultrasound-guided transbronchial needle aspiration in mediastinal or hilar lymph node evaluation in extrathoracic malignancy: Benign or malignant?. Ann Thorac Med [serial online] 2013 [cited 2020 Nov 29 ];8:128-129
Available from: https://www.thoracicmedicine.org/text.asp?2013/8/2/128/109848


Full Text

Sir,

I read with interest the article "The utility of EBUS-guided TBNA in mediastinal or hilar lymph node evaluation in extra thoracic malignancy: Benign or malignant." [1] The primary end point of study in reference [1] was to determine the etiology and prevalence of malignancy for hypermetabolic and enlarged hilar/mediastinal lymph nodes in patients with previously diagnosed extra pulmonary malignancy. The article is very well written. The study is relevant in today's era of semi-invasive procedures with utmost importance given to safety and patient care. I would like to highlight one or two points related to the study in discussion. First, authors had suggested that sensitivity and specificity of endorbonchial ultrasound (EUS)-guided transbronchial needle aspiration (TBNA) is lower than that of EBUS, considering the number of lymph node (LN) which are accessible via EBUS. [1] But as per the literature, EUS is a more safe procedure and does not require mechanical ventilation. [2] Endorbonchial ultrasound-guided fine needle aspiration (EUS-FNA) has been shown to be particularly useful in the analysis of lesions in the aortopulmonary window (station 5), the subcarinal area (station 7) the lower paraoesophageal LN (station 8), and those in the ligamentum pulmonale (station 9). [2] Due to unavailability of EBUS in our hospital, we refer our patients for EUS which is done by Gastroenterologist. In our experience, we found that if performed for selected LN stations [2] the yield of EUS is similar to EBUS with lesser procedure-related risk (93% sensitivity and 100% specificity * unpublished data).

The sensitivity of positron emission tomography (PET) scanning in staging the mediastinum is reported to vary from 0.5 to 1.0 in previous studies. [3] The cut-off values of SUV max of mediastinal lymph node recommended by various studies ranges from 2.5 to 5.3. [4] With this background, I would like to know whether authors observe any particular cut-off value of SUV max over positron emission tomography-computed tomography (PET-CT) among the 18 patients with proven malignancy. I understand that it was not one of the objectives of present study to determine cut-off value of SUV max over PET CT, but if authors would share this information, it will be very helpful to us, as in our hospital unlike EBUS, PET-CT is available.

I once again would like to congratulate Parmakisz E T and colleagues for their work.

References

1Parmaksiz ET, Caglayan B, Salepci B, Comert SS, Kiral N, Fidan N, et al. The utility of endorbonchial ultrasound-guided transbronchial needle aspiration in mediastinal or hilarlymphnode evaluation in extrathoracic malignancy: Benign or Malignant? Ann Thorac Med 2012;7:210-4.
2Annema JT, Veseliç M, Versteegh MI, Willems LN, Rabe KF. Mediastinal restaging: EUS-FNA offers a new perspective. Lung Cancer 2003;42:311-8.
3Toloza EM, Harpole L, McCrory DC. Noninvasive staging of non-small cell lung cancer: A review of the current evidence. Chest 2003;123:137S-46S.
4Perigaud C, Bridji B, Roussel JC, Sagan C, Mugniot A, Duveau D, et al. Prospective preoperative mediastinal lymph node staging by integrated positron emission tomography-computerised tomography in patients with non-small-cell lung cancer. Eur J Cardiothorac Surg 2009;36:731-6.