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Can J Gastroenterol. Sep 2008; 22(9): 771–773.
PMCID: PMC2661283
Latent lymphocytic enterocolitis associated with celiac disease manifesting after resection for colon cancer: Case report and review of the literature
Vikram Tangri, MD,1 David K Driman, MBChB FRCPC,2 and Nilesh Chande, MD FRCPC3
1Faculty of Medicine and Dentistry;
2Department of Pathology;
3Department of Medicine, Division of Gastroenterology, The University of Western Ontario, London Health Sciences Centre, London, Ontario
Correspondence: Dr Vikram Tangri, c/o Dr Nilesh Chande, Mailbox 55, London Health Sciences Centre, South Street Hospital, 375 South Street, London, Ontario N6A 4G5. Telephone 519-667-6582, fax 519-667-6820, e-mail vtangri2008/at/meds.uwo.ca
Received April 11, 2008; Accepted April 13, 2008.
Abstract
Lymphocytic colitis, a cause of chronic watery diarrhea, is histologically characterized by increased intraepithelial lymphocytosis. Studies have associated this disorder with celiac disease, although there are no reports of patients with both lymphocytic colitis and colon cancer. The present case report describes a patient with lymphocytic colitis, which manifested five years after he presented with a cecal adenocarcinoma, and three years following a diagnosis of celiac disease. Pathological review of his initial resection specimen demonstrated lymphocytic enterocolitis, indicating a five-year latency in the presentation of this disease.
Keywords: Celiac disease, Colitis, Colorectal cancer, Lymphocytic colitis, Microscopic colitis
La colite lymphocytaire, une cause de diarrhée aqueuse chronique, se caractérise sur le plan histologique par une lymphocytose intra-épithéliale accrue. Des études ont établi un lien entre cette maladie et la maladie cœliaque, bien qu’aucun cas de colite lymphocytaire et de cancer du côlon concomitants n’ait été rapporté. Le présent article décrit un patient atteint d’une colite lymphocytaire qui s’est manifestée cinq ans après un adénocarcinome au niveau du cæcum et trois ans après un diagnostic de maladie cœliaque. L’analyse pathologique du premier spécimen réséqué a révélé la présence d’une entérocolite lymphocytaire, indiquant une latence de cinq ans avant l’apparition de signes de cette maladie.
Lymphocytic colitis is a cause of chronic watery diarrhea, and is characterized by histological abnormalities in endoscopically normal colonic mucosa (1). It is related to collagenous colitis, with both disorders having similar clinical presentations but distinct histological features (2). These conditions are collectively referred to as microscopic colitis. The predominant finding in lymphocytic colitis is increased intraepithelial lymphocytosis, while collagenous colitis has a thickened subepithelial collagen band (2,3).
A higher prevalence of lymphocytic colitis in women has been reported (4,5), and the diagnosis is usually made in middle or old age (6). Clinically, lymphocytic colitis may present with diarrhea and abdominal cramping, nausea, fatigue and weight loss (68). Both the etiology and pathogenesis of this illness remain unknown, although autoimmune and drug-related causes have been proposed (6,811). Studies (12,13) have linked lymphocytic colitis with celiac disease, while others (14,15) have proposed an association between collagenous colitis and colorectal cancer. Currently, little is known about the link between lymphocytic colitis and colorectal cancer.
An 81-year-old man presented initially for assessment of anemia, weight loss and mild diarrhea. His medical history included gastroesophageal reflux disease, osteoarthritis, benign prostatic hypertrophy, hypertension and stroke, as well as longstanding lactose intolerance for which he was taking a lactose-free diet. Colonoscopy performed at that time demonstrated a stage 2 cecal adenocarcinoma. He underwent a right hemicolectomy and, postoperatively, his diarrhea and other symptoms completely resolved.
Two years later, the patient presented with watery diarrhea occurring three times daily and mild weight loss. Colonoscopy and subsequent small bowel and sigmoid biopsies were negative. His antitransglutaminase antibody was positive at 1768 U/mL (normal is less than 6.0 U/mL), and small bowel biopsies at upper endoscopy demonstrated flattened villi and increased intraepithelial lymphocytosis typical of celiac disease (Figure 1), along with lymphocytic gastritis (Figure 2). A gluten-free diet led to resolution of his diarrhea and allowed him to regain his lost weight.
Figure 1)
Figure 1)
Celiac disease – the duodenal mucosa shows blunted villi, increased numbers of inflammatory cells in the mucosa and increased intraepithelial lymphocytes
Figure 2)
Figure 2)
Lymphocytic gastritis – there is a marked increase in the number of intraepithelial lymphocytes in the gastric foveolar epithelium. Inset – higher magnification of intraepithelial lymphocytes
Surveillance colonoscopy, performed five years after the resection, demonstrated a small hyperplastic polyp at the transverse colon but no cancer recurrence. His current assessment was for new-onset watery diarrhea, occurring three to four times per day for approximately one year. This condition was associated with urgency, nocturnal stools, abdominal cramping, nausea, mild weight loss and fatigue, and persisted for nearly one year despite strict adherence to his gluten- and lactose-free diet. His medications at this time included amlodipine, ramipril and acetylsalicylic acid, without any recent changes. He was given a prescription for loperamide 2 mg orally, as needed. He was also prescribed oral rabeprazole 20 mg daily for his gastro-esophageal reflux disease. Colonoscopy was performed one month later, and biopsies from his ileum and colon demonstrated lymphocytic enterocolitis (Figure 3). His symptoms responded partially to loperamide treatment over the subsequent three months, at which point, cholestyramine 4 g daily was added to his medical therapy.
Figure 3)
Figure 3)
Lymphocytic colitis (biopsies at recent presentation) –colonic mucosa contains an increased number of mucosal plasma cells and increased intraepithelial lymphocytes. Inset – higher magnification of intraepithelial lymphocytes
Pathological review of the specimen from his initial colon cancer resection six years earlier demonstrated findings of lymphocytic enterocolitis (Figure 4); the degree of inflammation was lower than in his most recent biopsies.
Figure 4)
Figure 4)
Lymphocytic colitis (from colon cancer resection specimen) – colonic mucosa with increased intraepithelial lymphocytes but fewer mucosal plasma cells than in the subsequent biopsies. Inset –higher magnification of intraepithelial lymphocytes (more ...)
Lymphocytic colitis usually presents in middle- or older-aged adults (6). Studies (6,9,1619) report a female predominance, with female to male ratios ranging from 5.75:1 to 1:1. Studies (6,10,20) have shown a link between a variety of drugs (eg, nonsteroidal anti-inflammatory drugs, lansoprazole) and lymphocytic colitis.
Familial occurrences of lymphocytic colitis have been reported (21), in addition to associations with thyroid disorders, diabetes mellitus, inflammatory bowel disease and others (4,9,18,20). Celiac disease has been found in 6% to 27% of patients with lymphocytic colitis (56,18,22). This relationship may be mediated by shared haplotype HLA DQ2 (12,23), although this haplotype was not increased in patients with lymphocytic colitis in another study (4). In one study (24), lymphocytic gastritis was found in 33% of patients with celiac disease, and lymphocytic colitis was found in 38% of those with both celiac disease and lymphocytic gastritis (24).
Although cases of celiac disease with coexistent colon carcinoma have been reported (25), studies have not shown an increased incidence of colorectal neoplasms in patients with celiac disease; nevertheless, colonoscopic evaluation for possible neoplasm in patients with iron deficiency anemia is an important investigation (26,27).
We performed a PubMed literature search for case studies published between 1980 and August 2007 that described lymphocytic or collagenous colitis associated with colorectal cancer. We also examined review papers of microscopic colitis published in the same period. There were no reports of an association between lymphocytic colitis and colorectal cancer. Although some studies (28,29) demonstrated no increased risk of cancer in patients with collagenous colitis, there were three case reports of collagenous colitis associated with colon cancer. Two of these (14,30) described collagenous colitis associated with colon cancer in female patients in their seventh decade of life. Another (15) showed both symptomatic and histological resolution of collagenous enterocolitis in a 52-year-old woman after surgical intervention for localized colon cancer, and suggested that this was a paraneoplastic phenomenon.
The present paper describes an 81-year-old man with latent lymphocytic enterocolitis. After the initial presentation, he remained asymptomatic from this disease before developing a one-year history of diarrhea and associated symptoms. A comparison of biopsy specimens from his most recent colonoscopy with previous biopsy specimens showed changes in lymphocytic enterocolitis.
Because the course of lymphocytic colitis is uncertain, and may worsen or resolve on its own (8), it is possible that it may have contributed to his initial presentation when diagnosed with colon cancer, as well as his presentation four years later when he was diagnosed with celiac disease. Nonetheless, his symptoms in both cases resolved with surgery and a gluten-free diet, respectively. The present case demonstrates an apparent five-year latency in the presentation of lymphocytic enterocolitis.
Lymphocytic colitis may be asymptomatic; two studies (1,31) have shown a frequency rate of 0.9% for lymphocytic colitis in routine colonoscopic biopsies of asymptomatic patients. Therefore, it is conceivable that the prevalence of histopathological changes of lymphocytic colitis is higher once asymptomatic individuals are accounted for. The risk for latent disease may lower the threshold for taking biopsies during screening colonoscopy, especially for those with other autoimmune conditions such as celiac disease. It is also suggested that the association between drugs and lymphocytic colitis may be mediated by activation of a latent disease process.
SUMMARY
The present paper describes a patient with celiac disease who manifested with lymphocytic enterocolitis after resection for colon cancer. The case highlights the potential latency of lymphocytic colitis, and raises the possibility of an association between lymphocytic colitis and colon cancer. Further research to better delineate the association between lymphocytic colitis and colon cancer, and the possibility of latent disease will improve our understanding of the epidemiology and pathogenesis of, and investigations for, this condition.
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