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Li JJ, Boivin Z, Bhalodkar S, Liu R. Point of Care Abdominal Ultrasound. Semin Ultrasound CT MR 2024; 45:11-21. [PMID: 38056783 DOI: 10.1053/j.sult.2023.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Abdominal pain is a common emergency department complaint, and point-of-care ultrasound (POCUS) of the abdomen is increasingly being utilized to evaluate clinical manifestations. It aids in accurate diagnoses and assists in procedures, particularly in emergency and critical care settings. Imaging is often required to confirm the etiology of abdominal pain. POCUS provides the benefit of avoiding radiation exposure and enables quicker diagnosis compared to computed tomography scans. There is growing evidence of the diagnostic accuracy for numerous abdominal POCUS applications, including appendicitis, intussusception, diverticulitis, gastric ultrasound and contrast-enhanced ultrasound.
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Affiliation(s)
- Jia J Li
- Yale New-Haven Hospital, New Haven, CT.
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Benedetti E, Traverso G, Pucci G, Morganti R, Bramanti E, Lippolis P, Susini MC, Mazzantini E, Giubbolini R, Mavilia F, Capochiani E, Neri E, Arena C, Cerri F, De Simone L, Valentini K, Stella SM, Ricchiuto V, Bruno B, Galimberti S. Impact of different chemotherapy regimens on intestinal mucosal injury assessed with bedside ultrasound: a study in 213 AML patients. Front Oncol 2023; 13:1272072. [PMID: 38023169 PMCID: PMC10646482 DOI: 10.3389/fonc.2023.1272072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 10/19/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Neutropenic enterocolitis (NEC) is a life-threatening complication reported in patients with acute myeloid leukemia (AML) following chemotherapy (CHT). Intensive induction and consolidation CHT may damage intestinal mucosa leading to a NEC episode (NECe). NEC reported mortality may be up to 30-60%. Early US-guided bed-side diagnosis and prompt treatment may substantially improve the survival. An emerging worldwide concern is the intestinal colonization by multi-drug-resistant bacteria especially when patients are exposed to chemotherapy regimens potentially correlated to mucosal damage. Methods In our study we prospectively enrolled all AML patients admitted in our leukemia unit to receive intensive induction and consolidation chemotherapy and experiencing chemotherapy-induced-neutropenia (CHTN). Results and discussion Overall, we enrolled N=213 patients from 2007 to March 2023. We recorded N=465 CHTN, and N=42 NECe (9.0% incidence). The aim of our study was to assess which chemotherapy regimens are more associated with NEC. We found that ALM1310, followed by 7 + 3 (daunorubicin), 7 + 3 (idarubicin), 5 + 3 + 3 (cytarabine, etoposide, idarubicin), and AML1310 (consolidation) were associated with a statistically higher incidence of NEC. We did not detect NEC episodes in patients treated with CPX-351, 5 + 2 (cytarabine, idarubicine), and high-dose cytarabine. Thus, we found that cytarabine could determine mucosal damage when associated with an anthracycline but not if delivered either alone or as dual-drug liposomal encapsulation of daunorubicin/cytarabine. We also describe NEC mortality, symptoms at diagnosis, intestinal sites involvement, and prognostic significance of bowel wall thickening.
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Affiliation(s)
- Edoardo Benedetti
- Hematology Operative Unit (UO), Department of Clinical and Experimental Medicine, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | - Ginevra Traverso
- Hematology Operative Unit (UO), Department of Clinical and Experimental Medicine, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | - Giulia Pucci
- Hematology Operative Unit (UO), Department of Clinical and Experimental Medicine, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | - Riccardo Morganti
- Section of Statistics, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | - Emilia Bramanti
- Institute of Chemistry of Organo Metallic Compounds (ICCOM), Consiglio Nazionale delle Ricerche (CNR), Pisa, Italy
| | - Piero Lippolis
- General and Peritoneal Surgery Unit, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | - Maria Chiara Susini
- Hematology Operative Unit (UO), Department of Clinical and Experimental Medicine, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | - Elisa Mazzantini
- Hematology Operative Unit (UO), Department of Clinical and Experimental Medicine, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | | | - Fabrizio Mavilia
- Hematology Operative Unit (UO), Department of Clinical and Experimental Medicine, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | | | - Emanuele Neri
- Radiology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Chiara Arena
- Radiology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Francesca Cerri
- Radiology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Luigi De Simone
- Anesthesia and Maternal-Infantile Resuscitation Unit, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | - Katia Valentini
- Anesthesia and Maternal-Infantile Resuscitation Unit, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | | | - Vittorio Ricchiuto
- Dipartimento di Tecnologie Sanitarie ESTAR, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - Benedetto Bruno
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Sara Galimberti
- Hematology Unit, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
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Early Diagnosis of Neutropenic Enterocolitis by Bedside Ultrasound in Hematological Malignancies: A Prospective Study. J Clin Med 2021; 10:jcm10184277. [PMID: 34575387 PMCID: PMC8468879 DOI: 10.3390/jcm10184277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/23/2021] [Accepted: 09/13/2021] [Indexed: 02/06/2023] Open
Abstract
(1) Background: Neutropenic enterocolitis (NEC) is a life-threatening complication following chemotherapy with high mortality rates. Early diagnosis is crucial to improve outcomes. We designed a large prospective study employing bedside ultrasonography (US) as a novel approach to allow early diagnosis and prompt treatment to reduce mortality. (2) Methods: NEC was defined as US or computed tomography (CT)-proven bowel wall thickness ≥ 4 mm at the onset of at least one of the following symptoms: fever and/or abdominal pain and/or diarrhea during neutropenia. From 2007 to 2018, 1754 consecutive patients underwent baseline bedside US that was invariably repeated within 12 h from the onset of symptom(s) suggestive of NEC. (3) Results: Overall, 117 episodes of NEC were observed, and overall mortality was 9.4%. Bowel wall thickening was invariably absent in the negative control group. Abdominal pain associated with one or more symptoms correlated with the highest relative risk (17.33), sensitivity (89.7%), specificity (100%), and accuracy (96.2%) for diagnosis. The combination of abdominal pain and fever at onset significantly correlated with worse survival (p < 0.0001, OR 13.85). BWT (p = 0.046), type of therapy (p = 0.049) and blood culture positivity (p = 0.003) correlated with worse survival. (4) Conclusions: Bedside ultrasound is a non-invasive and radiation free imaging technique for early diagnosis of NEC and its prompt treatment significantly reduced mortality.
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Lee EJ, Lee YJ, Park JH. Usefulness of Ultrasonography in the Diagnosis of Peptic Ulcer Disease in Children. Pediatr Gastroenterol Hepatol Nutr 2019; 22:57-62. [PMID: 30671374 PMCID: PMC6333589 DOI: 10.5223/pghn.2019.22.1.57] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/02/2018] [Accepted: 10/09/2018] [Indexed: 11/21/2022] Open
Abstract
PURPOSE This study was performed to assess the clinical usefulness of transabdominal ultrasonography (TUS) in detecting peptic ulcer disease (PUD) in children. METHODS Twenty-four patients (19 boys, 5 girls; mean age, 10.6±4.5 years [range, 3.0-17.9 years]) who were admitted to the hospital for acute abdomen or gastrointestinal bleeding and diagnosed with PUD by endoscopy and who underwent TUS were included. Clinical data were retrospectively collected by reviewing patient medical records. Gastric ulcer (GU) was suspected when the gastric wall exceeded 8 mm in thickness and had lost its five-layer structure on TUS. Duodenal ulcer (DU) was suspected if the duodenal wall thickness exceeded 5 mm. RESULTS Sensitivity of TUS in diagnosing PUD was 66.7% for GU and 38.9% for DU. Mean age and body weight of the 11 patients suspected with PUD on TUS were 10.9±4.4 years and 38.1±17.2 kg, respectively. For 13 patients without suspected PUD, they were 12.1±4.1 years and 39.6±17.0 kg, respectively. There was a significant difference in height, weight, and body mass index between patients who were suspected to have PUD and those who were not suspected on TUS (p=0.014, 0.008, and 0.005, respectively). A significant difference in the sensitivity of TUS in diagnosing PUD was found between patients under 30 kg and those over 30 kg (88.9% and 20.0%, respectively; p=0.003). CONCLUSION TUS investigation of the stomach and duodenum is an efficient method for PUD detection in children with low body weight. TUS can be used in preliminary diagnostic work-up before further invasive tests.
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Affiliation(s)
- Eun Joo Lee
- Department of Pediatrics, Pusan National University School of Medicine, Yangsan, Korea
| | - Yeoun Joo Lee
- Department of Pediatrics, Pusan National University School of Medicine, Yangsan, Korea
| | - Jae Hong Park
- Department of Pediatrics, Pusan National University School of Medicine, Yangsan, Korea
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Yang L, Li Y, Zhou T, Shi G, Pan J, Liu J, Wang G. Effect of the degree of gastric filling on the measured thickness of advanced gastric cancer by computed tomography. Oncol Lett 2018; 16:2335-2343. [PMID: 30008937 PMCID: PMC6036544 DOI: 10.3892/ol.2018.8907] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 01/25/2018] [Indexed: 11/24/2022] Open
Abstract
Imaging of gastric cancer thickness is closely associated with the depth of tumor invasion, which provides guidance for clinical staging and assists the evaluation of the effects of adjuvant therapy. However, it is unclear whether the measurement of thickness is affected by the degree of gastric filling, and its accuracy and reliability are under-reported. The present study aimed to investigate the influence of the degree of gastric filling on the measurement of gastric cancer thickness. A total of 38 patients with advanced gastric cancer who underwent enhanced abdominal computed tomography (CT) scanning at the Department of CT and MR in The Fourth Hospital of Hebei Medical University (Shijiazhuang, China) between July and September 2016 were recruited, consisting of 21 newly diagnosed cases and 17 follow-up cases following non-surgical treatments. Plain scanning (prior to filling) and enhanced scanning in venous phase (following filling) were performed. Axial CT images prior to and following filling of the normal part of gastric wall and the lesions were compared. The same procedure was repeated on these participants 1 month later by the same radiologist, and the results were compared with those obtained previously. Normal gastric wall thickness prior to and following gastric filling was significantly different (all P<0.001) with the most substantial changes observed at the greater curvature. Lesion thickness prior to and following filling was similar in newly diagnosed patients, but significantly different in patients for re-examination (P<0.05). The two thickness measurements in the same patients were consistent. The measured thickness of gastric cancer in newly diagnosed patients was relatively stable, and could be used as an indicator in baseline CT examination. Maintaining a similar degree of gastric filling during re-examination could aid the accurate evaluation of treatment efficacy.
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Affiliation(s)
- Li Yang
- Department of Computed Tomography and Magnetic Resonance, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Yong Li
- Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Tao Zhou
- Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Gaofeng Shi
- Department of Computed Tomography and Magnetic Resonance, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Jiangyang Pan
- Department of Computed Tomography and Magnetic Resonance, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Jing Liu
- Department of Computed Tomography and Magnetic Resonance, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Guangda Wang
- Department of Computed Tomography and Magnetic Resonance, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
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Prospective qualitative and quantitative non-invasive evaluation of intestinal acute GVHD by contrast-enhanced ultrasound sonography. Bone Marrow Transplant 2013; 48:1421-8. [PMID: 23665821 DOI: 10.1038/bmt.2013.65] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Revised: 03/24/2013] [Accepted: 03/26/2013] [Indexed: 12/19/2022]
Abstract
Intestinal acute GVHD (I-aGVHD) is a life-threatening complication after allografting. Non-invasive bed-side procedures to evaluate extension and treatment response are still lacking. We hypothesized that, during I-aGVHD, contrast-enhanced ultrasound sonography (CEUS) could detect microcirculation changes (MVC) of the bowel wall (BW) and help to monitor treatment response. We prospectively employed CEUS in 83 consecutive patients. Of these, 14 patients with biopsy-proven intestinal GVHD (I-GVHD) were defined as the study group, whereas 16 patients with biopsy-proven stomach GVHD (U-GVHD) without intestinal symptoms, 6 normal volunteers and 4 patients with neutropenic enterocolitis were defined as the control group. All patients were evaluated with both standard ultrasonography (US) and CEUS at the onset of intestinal symptoms, during clinical follow-up and at flare of symptoms. Standard US revealed BW thickening of multiple intestinal segments, useful to determine the extension of GVHD. CEUS showed MVC, which correlated with GVHD activity, treatment response, and predicted flare of intestinal symptoms. US and CEUS findings were superimposable at diagnosis and in remission. CEUS was, however, more sensitive and specific to identify subclinical activity in patients with clinical relevant improvement. These findings were not observed in the control groups. CEUS is a non-invasive, easily reproducible bed-side tool useful to monitor I-aGVHD.
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Suk KT, Lim DW, Kim MY, Park DH, Kim KH, Kim JM, Kim JW, Kim HS, Kwon SO, Baik SK, Park SJ. Thickening of the gastric wall on transabdominal sonography: a sign of gastric cancer. JOURNAL OF CLINICAL ULTRASOUND : JCU 2008; 36:462-466. [PMID: 18335513 DOI: 10.1002/jcu.20450] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
PURPOSE To determine the value of a thickened gastric wall detected during transabdominal sonography (TAS) in the diagnosis of gastric cancer. METHOD This prospective study comprised 312 patients who underwent both TAS and endoscopy. Transverse TAS scanning was performed using a 3.5-MHz curved transducer to measure gastric wall thickness in the antrum and body of the stomach. Based on endoscopic and histologic findings, we classified the patients into 3 groups: normal or benign disease (BD), early gastric cancer (EGC), and advanced gastric cancer (AGC). TAS findings were then compared. RESULTS The thickness of the gastric wall was 4.9 +/- 1.6 mm in 262 patients with BD, 5.6 +/- 2.4 mm in 21patients with EGC, and 10.3 +/- 4.7 mm in 29 patients with AGC (p < 0.01). A gastric wall thickness of greater than 7 mm had a 75.0% sensitivity, 92.6% specificity, 50.0% positive predictive value, and 97.4% negative predictive value in the diagnosis of AGC. CONCLUSION Although not suitable as a screening method for gastric cancer, a thickening of the gastric wall of >7 mm may be a marker for AGC.
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Affiliation(s)
- Ki Tae Suk
- Department of Internal Medicine and Institute of Lifelong Health, Yonsei University, Wonju College of Medicine, Wonju, Gangwon-do, South Korea
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Aubry S, Berger A, Manzoni P, Delabrousse E, Sarliève P, Kastler B. [US diagnosis of benign hypertrophic gastritis in a child]. JOURNAL DE RADIOLOGIE 2008; 89:352-353. [PMID: 18408636 DOI: 10.1016/s0221-0363(08)93012-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- S Aubry
- Service de Radiologie A, Hôpital J. Minjoz, CHU de Besançon, boulevard Fleming, 25030 Besançon, France.
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Couture O, Cherin E, Foster FS. Model for the ultrasound reflection from micro-beads and cells distributed in layers on a uniform surface. Phys Med Biol 2007; 52:4189-204. [PMID: 17664602 DOI: 10.1088/0031-9155/52/14/011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A model predicting the reflection of ultrasound from multiple layers of small scattering spheres is developed. Predictions of the reflection coefficient, which takes into account the interferences between the different sphere layers, are compared to measurements performed in the 10-80 MHz and 15-35 MHz frequency range with layers of glass beads and spherical acute myeloid leukemia (AML) cells, respectively. For both types of scatterers, the reflection coefficient increases as a function of their density on the surface for less than three superimposed layers, at which point it saturates at 0.38 for glass beads and 0.02 for AML cells. Above three layers, oscillations of the reflection coefficient due to constructive or destructive interference between layers are observed experimentally and are accurately predicted by the model. The use of such a model could lead to a better understanding of the structures observed in layered tissue images.
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Affiliation(s)
- O Couture
- Imaging Research, Sunnybrook Health Sciences Centre/University of Toronto, Toronto, Canada.
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Liao SR, Dai Y, Huo L, Yan K, Zhang L, Zhang H, Gao W, Chen MH. Transabdominal ultrasonography in preoperative staging of gastric cancer. World J Gastroenterol 2004; 10:3399-404. [PMID: 15526355 PMCID: PMC4576217 DOI: 10.3748/wjg.v10.i23.3399] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
AIM: To investigate the value of transabdominal ultrasonography (US) in the preoperative staging of gastric cancer.
METHODS: A total of 198 patients with gastric cancer underwent preoperatively transabdominal US, depth of tumor infiltration was assessed in 125 patients, and lymph node metastasis was assessed in 106 patients.
RESULTS: The staging accuracy of transabdominal US was 55.6%, 75.0%, 87.3% and 71.1% in T1, T2, T3 and T4 carcinomas, respectively. The overall accuracy was 77.6%. The detection rate for pancreatic invasion and liver invasion was 77.4%, 71.4%, respectively. The sensitivity, specificity, accuracy of transabdominal US in assessment of lymph node metastasis were 77.6%, 64.1%, 72.6%, respectively. Various shapes such as round, ovoid, spindle were encountered in benign and malignant lymph nodes. Majority of both benign and malignant lymph nodes were hyperechoic and had a distinct border. Benign lymph nodes were smaller than malignant lymph nodes in length and width (P = 0.000, 0.005). Irregular shape, fusional shape, infiltrative signs, inhomogenous echo were seen mainly in malignant lymph nodes (P = 0.045, 0.006, 0.027, 0.006).
CONCLUSION: Transabdominal US is useful for preoperative staging in gastric cancer, although it is difficult to differentiate benign from malignant lymph nodes.
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Affiliation(s)
- Sheng-Ri Liao
- Department of Ultrasonography, School of Oncology, Peking University, Beijing 10036, China
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Smet MH, Mussen E, Ectors N, Breysem L. High-resolution real-time compound ultrasound imaging of transient protein-losing gastropathy of childhood. Eur Radiol 2003; 13 Suppl 4:L142-6. [PMID: 15018180 DOI: 10.1007/s00330-003-2071-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
We report the case of a 1.5-year-old girl with transient protein-losing gastropathy with hypertrophic gastric folds (PLGH). The diagnosis of PLGH was made by abdominal ultrasound (US) and not by an upper gastrointestinal (UGI) study as reported in many previous publications. Real-time compound ultrasound imaging showed in high detail the echogenic thickening of the mucosal gastric layer and associated hyperaemia on colour Doppler US. These ultrasonic findings highly correlated with the endoscopic US findings and microscopic changes of the gastric wall in PLGH. An awareness of the high-resolution abdominal ultrasound appearances of PLGH may facilitate earlier diagnosis and obviate the need for an upper GI contrast series.
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Affiliation(s)
- Maria-Helena Smet
- Department of Radiology, University Hospitals, Herestraat 49, 3000 Leuven, Belgium.
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Christopher RL. Recent Developments in Diagnostic Imaging of the Gastrointestinal Tract of the Dog and Cat. Vet Clin North Am Small Anim Pract 1999. [DOI: 10.1016/s0195-5616(99)50025-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wright AB, McKelvey GM, Wood AK, Post EJ. Sonographic observations of the gastroduodenal junction in neonatal piglets. ULTRASOUND IN MEDICINE & BIOLOGY 1998; 24:1337-1344. [PMID: 10385956 DOI: 10.1016/s0301-5629(98)00113-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Knowledge of the function of the gastroduodenal junction is important, as changes in its motility are associated with gastrointestinal disorders. Sonographic observations were made of the stomach and duodenum of 19 neonatal piglets, 2-6 d of age. Contractions of the stomach and duodenum were identified clearly; the overall rate of gastric contractions was about 4 min-1. The percentage of contractions in which there was a closure of the terminal pyloric antrum and pyloric canal varied, being 57.2% +/- 4.6% in the first postprandial hour and 43.1% +/- 3.0% in the third. Antegrade flow of digesta principally occurred preceding a closure of the pyloric antrum and canal. During contractions of the pyloric antrum, the torus pyloricus moved caudally to fill the lumen of the pyloric canal. Our sonographic method provided a noninvasive technique for studying the form and function of gastroduodenal motility in the neonate, suitable for investigating factors that alter gastric emptying.
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Affiliation(s)
- A B Wright
- Department of Animal Science, University of Sydney, New South Wales, Australia
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Holden A, Mendelson R, Edmunds S. Pre-operative staging of gastro-oesophageal junction carcinoma: comparison of endoscopic ultrasound and computed tomography. AUSTRALASIAN RADIOLOGY 1996; 40:206-12. [PMID: 8826718 DOI: 10.1111/j.1440-1673.1996.tb00386.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Fifteen patients with carcinoma of the gastro-oesophageal junction were pre-operatively staged with endoscopic ultrasound (EUS) and computed tomography (CT). The accuracy of tumour and nodal staging using both modalities was compared to the final histological staging of the resected specimens. In staging depth of tumour growth, EUS was significantly more accurate (87% of lesions correctly staged) than CT (40% correctly staged). In staging nodal involvement, EUS was again significantly more accurate (73% correctly staged) than CT (33%). Two-thirds of the lesions were traversable with the endoscopic probe, but most of the nontraversed lesions were correctly staged on EUS. In this study, CT has performed poorly as a staging modality for carcinoma at the gastro-oesophageal junction. Other studies have shown CT to be less accurate at this location than at other oesophageal sites. The orientation of the gastro-oesophageal junction, lack of surrounding fat planes, proximity of adjacent organs and patient motion contribute to the poor staging performance of CT at this location. In contrast, EUS has been an accurate staging modality at the gastro-oesophageal junction in this study and compares well with other studies evaluating EUS in the more proximal oesophagus. Endoscopic ultrasound is therefore a necessary modality if accurate pre-operative staging of gastro-oesophageal junction carcinoma is to be achieved.
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Affiliation(s)
- A Holden
- Department of Diagnostic Radiology, Royal Perth Hospital, Western Australia, Australia
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