There are several synonyms for the medical term "duodenal smear", which is a diagnostic test that involves the collection of cells or tissue from the duodenum - the first part of the small intestine. The most common synonyms for this procedure include duodenal biopsy, small bowel biopsy, and duodenal tissue sampling. Other less common synonyms include duodenal cytology and duodenal brush cytology. These different synonyms might be used interchangeably by healthcare professionals depending on the context and the specific techniques used to collect and examine the samples. Overall, the use of synonyms helps to ensure effective communication among medical professionals and to facilitate accurate and timely diagnosis of various gastrointestinal conditions.