[Two cases of multi-drug-resistant pulmonary tuberculosis with para-aminosalicylic acid (PAS)-induced hypothyroidism].
Two cases of multi-drug-resistant pulmonary tuberculosis with para-aminosalicylic acid (PAS)-induced hypothyroidism were reported. Case 1; a 73-year-old male, complaining of edema, was admitted to our hospital. He had been treated for his multi-drug-resistant pulmonary tuberculosis during the past 1 year with an antituberculous regimen consisting of ethambutol (EB), ethionamide (ETH) and PAS. A thyroid profile performed when he was admitted to our hospital showed several marked abnormalities: serum thyroid stimulating hormone (TSH) was elevated (69.4 microIU/ml: normal, 0.4-4.2 mIU/ml), free thyroxine level (T4) (0.01 ng/dl; normal, 0.70-1.60 ng/dl) and free triiodothyronine level (Ts) (0.60 pg/ml; normal, 2.3-4.1 pg/ml) were low. PAS was discontinued after he was admitted to our hospital, since PAS was believed to be the cause of the hypothyroidism. A thyroid profile that was repeated after the exclusion of PAS from treatment showed the following results: the TSH level was decreased (13.4 mIU/ml), the free T4 (0.93 ng/dl) were normal. During treatment with PAS, he had never received thyroid replacement therapy. Case 2; A 22-year-old female, complaining of hemosputum. She had been treated for her multi-drug-resistant pulmonary tuberculosis during the past 11 months with an antituberculous regimen consisting of EB, ETH and PAS. A thryoid profile performed when she was admitted to our hospital showed several marked abnormalities: elevated serum TSH (112.7 mIU/ml), and low T4 (2.0 micrograms/dl) and T3 (1.1 ng/ml). A thyroid profile that was repeated after the exclusion of PAS from treatment showed the following results: the TSH level was decreased (5.1 mIU/ml). Drug-induced hypothyroidism is an infrequent side effect of therapy with PAS, and only a few cases of PAS-induced hypothyroidism have been reported so far. In this report, we describe patients with hypothyroidism who were receiving therapy for multi-drug-resistant tuberculosis, tuberculosis namely, resistant to at least isoniazid (INH) and rifampicin (RFP), with a regimen that contained PAS.
Mizutani
H
H
Department of Respiratory Medicine, Ogaki Municipal Hospital, 4-86, Minaminokawa-cho, Ogaki-shi, Gifu 503-8502, Japan.
Horiba
M
M
Shindoh
J
J
Kimura
T
T
Son
M
M
Wakahara
K
K
D000328:Adult; D000368:Aged; D010131:Aminosalicylic Acid / Q000009:adverse effects* / Q000627:therapeutic use; D000995:Antitubercular Agents / Q000009:adverse effects* / Q000627:therapeutic use; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D007037:Hypothyroidism / Q000139:chemically induced*; D008297:Male; D018088:Tuberculosis, Multidrug-Resistant / Q000188:drug therapy*; D014397:Tuberculosis, Pulmonary / Q000188:drug therapy*
D000995:Antitubercular Agents; D010131:Aminosalicylic Acid