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Ann Thorac Surg 1996;61:277
© 1996 The Society of Thoracic Surgeons
Lister Hospital, 94, Kanagasabai nagar, Chidambaram 608 001, India
Departments of cardiothoracic vascular surgery, SCTIMST, Trivandrum 695 011, India
To the Editor:
There are many causes reported for chylothorax [13]. We would like to report a case of chylothorax after irradiation given 18 years ago for thyroid malignancy.
A 48-year-old man presented with dyspnea, right-sided chest pain, and low-grade fever of 1 week's duration. Examination revealed moderate cachexia and anemia and features of right-sided massive pleural effusion. Pleurocentesis revealed that the nature of the fluid was chyle. The biochemical examination confirmed it to be chyle. The microbial examination proved it to be free of bacteria. He denied a history of having undergone any chest operation or trauma. He gave a history of having undergone total thyroidectomy 18 years ago. The histopathology being papillary carcinoma, he had been given external irradiation then (probably due to the nonavailability of radioactive iodine). He had been asymptomatic since then. He had been taking thyroxin.
For the chylothorax he was managed by chest tube drainage, protein supplementation, and chest physiotherapy. The tube thoracostomy had to be kept for 3 weeks.
To find the cause of the chylothorax, we did computed tomographic scan of the chest and the neck and iodine scan. These were normal, proving absence of secondary thyroid malignancy. We did a lymphangiogram, which showed a block at the level of the posterior mediastinum at the D3 level. We presume that the cause of the chylothorax may be delayed mediastinal fibrosis due to radiotherapy. As for any other case of chylothorax, he was managed conservatively.
References
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