Role of PET and combination PET/CT in the evaluation of patients with inflammatory bowel disease (original) (raw)
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Role of scintigraphy in inflammatory bowel disease
World Journal of Gastroenterology, 2009
The diagnosis of inflammatory bowel disease (IBD) depends on direct endoscopic visualization of the colonic and ileal mucosa and the histological study of the obtained samples. Radiological and scintigraphic methods are mainly used as an adjunct to endoscopy. In this review, we focus on the diagnostic potential of nuclear medicine procedures. The value of all radiotracers is described with special reference to those with greater experience and more satisfactory results. Tc-99m hexamethylpropylene amine oxime white blood cells remain a widely acceptable scintigraphic method for the diagnosis of IBD, as well as for the evaluation of disease extension and severity. Recently, pentavalent Tc-99m dimercaptosuccinic acid has been recommended as an accurate variant and a complementary technique to endoscopy for the follow-up and assessment of disease activity. Positron emission tomography alone or with computed tomography using fluorine-18 fluorodeoxyglucose appears to be a promising method of measuring inflammation in IBD patients. Inflammatory chronic disease of the colon: how to image. Eur J Radiol 2007; 61: 442-448 7 Parente F, Greco S, Molteni M, Anderloni A, Bianchi Porro G. Imaging inflammatory bowel disease using bowel ultrasound. Eur J Gastroenterol Hepatol 2005; 17: 283-291 8 Horsthuis K, Bipat S, Bennink RJ, Stoker J. Inflammatory bowel disease diagnosed with US, MR, scintigraphy, and CT: meta-analysis of prospective studies. Radiology 2008; 247: 64-79 9 Madsen SM, Thomsen HS, Munkholm P, Davidsen B, Dorph S, Nielsen SL, Schlichting P. Inflammatory bowel disease evaluated by low-field magnetic resonance imaging. Comparison with endoscopy, 99mTc-HMPAO leucocyte scintigraphy, conventional radiography and surgery. Scand J Gastroenterol 2002; 37: 307-316 10 Gan SI, Beck PL. A new look at toxic megacolon: an update and review of incidence, etiology, pathogenesis, and management. Am J Gastroenterol 2003; 98: 2363-2371 11 Györke T, Duffek L, Bártfai K, Makó E, Karlinger K, Mester A, Tarján Z. The role of nuclear medicine in inflammatory bowel disease. A review with experiences of aspecific bowel activity using immunoscintigraphy with 99mTc antigranulocyte antibodies. Eur J Radiol 2000; 35: 183-192 12 Schölmerich J, Schmidt E, Schümichen C, Billmann P, Schmidt H, Gerok W. Scintigraphic assessment of bowel involvement and disease activity in Crohn's disease using technetium 99m-hexamethyl propylene amine oxine as leukocyte label. Gastroenterology 1988; 95: 1287-1293 13 Giaffer MH, Tindale WB, Holdsworth D. Value of technetium-99m HMPAO-labelled leucocyte scintigraphy as an initial screening test in patients suspected of having inflammatory bowel disease.
Acta Radiologica, 2020
Background The clinical utility of positron emission tomography/magnetic resonance imaging (PET/MRI) in comparison to standard work-up with patients with known or suspected inflammatory bowel disease (IBD) is unknown. Purpose To evaluate the value of 18F-fluorodeoxyglucose (18F-FDG) PET/MRI in the diagnostics of IBD and further compare the data obtained using PET/MRI to histological findings. Materials and Methods Ten patients with relapse in IBD or with symptoms of suspected IBD were recruited either from a gastroenterology outpatient clinic or from a hospital ward. Intestinal inflammation was assessed with histology and 18F-FDG PET/MRI. Maximum standard uptake values (SUVmax) were calculated in six regions of the intestine (small bowel, ascending, transverse, descending and sigmoid colon, and rectum) and compared to histological analysis of inflammation activity. Results The study showed that both the inflammation activity ( P = 0.008) and the region of the biopsy in the intestine...
Radiology, 2008
To compare, by performing a meta-analysis, the accuracies of ultrasonography (US), magnetic resonance (MR) imaging, scintigraphy, computed tomography (CT), and positron emission tomography (PET) in the diagnosis of inflammatory bowel disease (IBD).
Inflammatory Bowel Diseases: Controversies in the Use of Diagnostic Procedures
Digestive Diseases, 2009
The term inflammatory bowel disease (IBD) denotes a genetically, immunologically and histopathologically heterogeneous group of inflammatory bowel disorders classified at present time as ulcerative colitis (UC), Crohn’s disease (CD) and indeterminate colitis (IC). Diagnosis of IBD is based on a non-strictly defined combination of clinical and diagnostic parameters. In order to guide the treatment, patients must be assessed by determining IBD phenotype, disease extension and distribution, extraintestinal manifestations, disease behavior, disease severity and drug responsiveness. Each element of the diagnostic process cannot be looked at alone, but has to be incorporated into general clinical assessment, bearing in mind that different phenotypes and age groups require specific diagnostic solutions. Advances in technology provided the possibility for the assessment of the entire digestive system with endoscopy leading the way. Sophisticated imaging methods made the analysis of the bowe...
The epidemiology and the pathogenesis of inflammatory bowel disease : Modern GI-Imaging
European Journal of Radiology, 2000
The etiology of inflammatory bowel disease (IBD) is still unknown. However, a satisfactory solution cannot be far away. IBD actually encompasses two diseases, i.e. Crohn's disease (CD) and ulcerous colitis (UC). These diseases resemble each other so closely that they cannot be distinguished even pathologically, but differ from each other sufficiently to regard them as independent entities. Epidemiological observations may be helpful in identifying the true causative factors of this evasive disease. Geographically, the prevalence of the disease has a slope from North to South and, to a lesser degree, from West to East. The Western-Eastern discrepancy can be attributed to a difference in Western life styles. The incidence of the disease has been increasing world-wide of late, but its spread has been slowing down in highly affected countries. Racial and ethnic relations in different populations and immigration studies offer interesting data which can reflect genetic, inherited, environmental and behavioural factors. The disease seems to have a characteristic racial -ethnic distribution: the Jewish population is highly susceptible everywhere, but its prevalence in that population nears that of the domestic society in which they live. In Hungary, the Roma (Gypsies) have a considerably lower prevalence than the average population. This can be attributed to a genetic or environmental influence. According to age, the onset of the disease occurs more often in the second or the third decade of life, but there also is another peak in the 60s. Regarding sexual distribution, there is a slight preponderance of colitis ulcerosa in men and of Crohn's disease in women. It may correspond to the stronger auto-immune affection in the process of Crohn's disease. Environmental factors and behavioural influences also are investigated. Diet, the role of the early ages, smoking habits and the influence of hormonal status and drugs are viewed as useful contributing factors in the manifestation of the disease. Genetic studies show that one-fourth of IBD patients have an affected family member. HLAB27 histocombatibility also plays an important, but not determining role in the development of the disease. Genetic factors seem to have a stronger influence in Crohn's disease than ulcerative colitis. The existence of multiple sclerosis -IBD families may reflect the common genetic background or the similar microbial effect as well. A great number of bacterial and viral factors has been suspected of being infectious factors in IBD, mostly in CD. Mycobacteria, Yersinia, Campylobacter, Clostridium, Clamidias, etc. as well as bacteria and some viruses such as herpes and rotavirus and the primary measles virus. None of them has been proven as a real and exclusively pathogenic factor. Immunological background has an important function in the manifestation of the disease. If an individual has a genetic susceptibility to infections, the down regulation of an inflammation in the bowel wall does not occur in a proper way. This initiates the auto-immune process which is a self-increasing cycle. Extra-intestinal manifestations of IBD are of high importance because they can not only follow intestinal symptoms, but precede them by years. Hepatic and biliary disturbances (primary sclerosing cholangitis), are the most serious complications. Mucocutaneous manifestations can be the first appearance of the main disease (in the mouth). Auto-immune consequences (erythema nodosum) or complications caused even by the therapy can occur. Ocular and musculoskeletal manifestations supposedly have the same genetic background and often precede the intestinal symptoms. Considering the epidemiological, genetic and immunological data, we can conclude that ulcerative colitis and Crohn's disease are heterogeneous disorders of mutifactorial etiology in which hereditary (genetic) and environmental (microbial, behaviour) factors interact to produce the disease.
Erciyes Medical Journal, 2022
Background: Blue rubber bleb nevus syndrome (BRBNS) is a rare, multifocal venous malformation. It most commonly affects the skin and the subcutaneous tissues or the viscera, especially the gastrointestinal tract, and less often the central nervous system. Diagnosis is based on clinical, radiological, and histopathological features. There is currently no medically curative treatment; however, sirolimus, an oral immunosuppressant drug, has recently been used effectively in patients with BRBNS. Case Report: Presently described is a case of neonatal BRBNS. The infant was born with diffuse skin and visceral organ involvement. In addition to supportive therapy, such as blood product transfusions, and excisions of the lesions, propranolol, corticosteroid and sirolimus treatment was administered, but without response. Conclusion: The patient died as a result of massive bleeding in the endotracheal tube, possibly due to lesions located in the lungs. To the best of our knowledge, this has not previously been reported in the literature.