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Pharmacobezoars described and demystified.
MedLine Citation:
PMID:  21370943     Owner:  NLM     Status:  In-Data-Review    
Introduction.?A bezoar is a concretion of foreign material that forms and persists in the gastrointestinal tract. Bezoars are classified by their material origins. Phytobezoars contain plant material, trichobezoars contain hair, lactobezoars contain milk proteins, and pharmacobezoars contain pharmaceutical products. Tablets, suspensions, and even insoluble drug delivery vehicles can, on rare occasions, and sometimes under specific circumstances, form pharmacobezoars. The goal of this review is to catalog and examine all of the available reports in the English language medical literature that convincingly describe the formation and management of pharmacobezoars. Methods.?Articles included in this review were identified by performing searches using the terms ?bezoar,? ?pharmacobezoar,? and ?concretion? in the following databases: OVID MEDLINE, PubMed, and JSTOR. The complete MEDLINE and JSTOR holdings were included in the search without date ranges. The results were limited to English language publications. Articles that described nonmedication bezoars were not included in the review. Articles describing phytobezoars, food bezoars, fecal impactions, illicit drug packet ingestions, enteral feeding material bezoars, and hygroscopic diet aid bezoars were excluded. The bibliographic references within the articles already accumulated were then examined in order to gather additional pharmacobezoar cases. The cases are grouped by pharmaceutical agent that formed the bezoar, and groupings are arranged in alphabetical order. Discussions and conclusions specific to each pharmaceutical agent are included in that agent's subheading. Discussion.?Patterns and themes that emerged in the review of the assembled case reports are reviewed and presented in a more concise format. Conclusion.?Pharmacobezoars form under a wide variety of circumstances and in a wide variety of patients. They are difficult to diagnose reliably. Rules for suspecting, diagnosing, and properly managing a pharmacobezoar are highly dependent on the pharmaceutical agent or agents involved. Becoming familiar with the sparse data available on pharmacobezoars and maintaining a high index of suspicion in future clinical encounters may be the best way to improve diagnostic sensitivity and accuracy.
Serge-Emile Simpson
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical toxicology (Philadelphia, Pa.)     Volume:  49     ISSN:  1556-9519     ISO Abbreviation:  Clin Toxicol (Phila)     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-03-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101241654     Medline TA:  Clin Toxicol (Phila)     Country:  England    
Other Details:
Languages:  eng     Pagination:  72-89     Citation Subset:  AIM; IM    
Albert Einstein Medical Center, Department of Emergency Medicine, Philadelphia, USA.
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