Carcinoid syndrome with unknown primary: a case report.
Carcinoid syndrome usually is associated with a classic presentation, the diagnosis of which is supported by elevations in neuroendocrine substances such as 5-hydroxyindoleacetic acid and by localization and pathologic identification of a neuroendocrine tumor. The authors report a patient for whom there was a 7-year delay in diagnosis and even then a primary tumor could not be localized.
Mahmood
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Section of Hematology and Oncology, Tulane University School of Medicine, New Orleans, Louisiana 70002, USA.
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D006916:5-Hydroxytryptophan / Q000378:metabolism; D017809:Fatal Outcome; D006801:Humans; D006897:Hydroxyindoleacetic Acid / Q000378:metabolism; D008297:Male; D008303:Malignant Carcinoid Syndrome / Q000175:diagnosis*; D008875:Middle Aged; D009382:Neoplasms, Unknown Primary / Q000175:diagnosis*; D013997:Time Factors
D006897:Hydroxyindoleacetic Acid; D006916:5-Hydroxytryptophan