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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2006-5-16
pubmed:abstractText
We report a 59-year-old man with cryptococcal meningoencephalitis who presented with typical features of syndrome of inappropriate antidiuretic hormone secretion (SIADH). There was no evidence of lung disease or drugs causing SIADH. Studies for endocrine functions and tumor markers were normal. The patient's hyponatremia was refractory to treatment (Na 120-125 mmol/L) after resolution of the cryptococcal infection. Three months after completion of antifungal treatment, a radiograph of the chest disclosed widening of the mediastinum. Computed tomography revealed a mediastinal mass. A tentative diagnosis of extrapulmonary cryptococcoma or a tumor was made. Positron emission tomography using F-fluorodeoxy glucose demonstrated an intense uptake mass in the mediastinum without lesions elsewhere in the body. A biopsy of the mass clearly showed small cell carcinoma (SCC) with positive immunoreactivity for arginine vasopressin and atrial natriuretic peptide. The hyponatremia completely resolved and tumor size dramatically decreased after chemotherapy. To the best of our knowledge, this is the first case of mediastinal SCC associated with SIADH. Patients with otherwise unexplained SIADH should be meticulously scrutinized for a possible malignancy.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0002-9629
pubmed:author
pubmed:issnType
Print
pubmed:volume
331
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
288-91
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Syndrome of inappropriate antidiuretic hormone secretion in a patient with cryptococcal meningoencephalitis: a hidden mediastinal small cell carcinoma.
pubmed:affiliation
Division of Nephrology, Department of Medicine, Tri-Service General Hospital, Taipei, Taiwan.
pubmed:publicationType
Journal Article, Case Reports