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cells to clean up the phosphorus ion from the alveolar space and in the process halting the accumulation of calcium and phosphorus rich microliths in the alveoli. Activation of such a mechanism can be the clue towards the development of new area of research for the treatment of PAM.

2. 3. 4.

2013;13:375. Kashyap S, Mohapatra PR. Pulmonary alveolar microlithiasis. Lung India 2013;30:143‑7. Pracyk JB, Simonson SG, Young SL, Ghio AJ, Roggli VL, Piantadosi CA. Composition of lung clavage in pulmonary alveolar microlithiasis. Respiration 1996;63:254‑60. Dahabreh M, Najada A. Pulmonary alveolar microlithiasis in an 8‑month‑old infant. Ann Trop Paediatr 2009;29:55‑9.

Surender Kashyap, Prasanta R. Mohapatra1 Access this article online

Kalpana Chawla Government Medical College, Karnal, Haryana, 1Department of Pulmonary Medicine, All India Institute of Medical Sciences, Bhubaneswar, India E‑mail: [email protected]

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Moslehi AM. Pulmonary alveolar microlithiasis. Lung India

Filariasis and pleural effusion Sir,

Hainan Medical University, Haikou, Hainan, China, 2 Faculty of Medicine, University of Nis, Nis, Serbia, 3 Joseph Ayobabalola University, Ikeji-Arakeji, Osun, Nigeria. E-mail: [email protected] 1

The recent report on filariais and pleural effusion is very interesting.[1] In the present case, Navaz et al. reported for a case of isolated pleural effusion of filarial etiology.[1] In fact, the finding of filarial parasite in pleural cavity is rare and there might be other underlying disclosed pathology. As noted, the concomitant presentation with malignancy should be kept in mind.[2] In case with signs and symptoms of malignancy, especially for extremely weight loss, seeking for the malignancy is needed. Nevertheless, the detection of malignant cell within pleural fluid is difficult and requires the experience of the microscopist. Detection of parasite can be easier and this might lead to the misdiagnosis of malignancy.


Navaz AK, Raikar MP, Acharya V, Shetty SK. Pleural effusion: An unusual cause and association. Lung India 2013;30:158-60. Singh SK, Pujani M, Pujani M. Microfilaria in malignant pleural effusion: An unusual association. Indian J Med Microbiol 2010;28:392-4.

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Somsri Wiwanitkit, Viroj Wiwanitkit1,2,3


Wiwanitkit House, Bangkhae, Bangkok, Thailand,

Organizing pneumonia in swine flu Sir, The recent publication on organizing pneumonia (OP) in swine flu is very interesting.[1] In fact, the pulmonary sequel of swine flu is an interesting concern in chest medicine.[2,3] Zanetti et al., raised an interesting issue on pulmonary fibrosis and OP and proposed that “The diagnosis of 376

secondary OP after H1N1 infection is important because proper treatment of OP requires corticosteroid therapy.[1]” In fact, OP as a complication of swine flu is mentioned in many reports.[4,5] Ajlan et al., studied on radiographic and computed tomography (CT) findings of cases with swine flu and reported that “predominant peribronchovascular and subpleural distribution, resembling OP” is common.[4] Lung India • Vol 30 • Issue 4 • Oct ‑ Dec 2013

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