17 research outputs found

    Multi-slice imaging of cystic tumors of the pancreas: Where are the limits of macroscopic characterization?

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    Les tumeurs kystiques du pancrĂ©as Ă©taient considĂ©rĂ©es comme rares et leur diagnostic en imagerie Ă©tait dominĂ© par leur distinction des pseudokystes postnĂ©crotiques et rĂ©tentionnels. La pratique plus frĂ©quente d’examens en coupes en haute rĂ©solution (scanner et IRM surtout, Ă©choendoscopie) a rendu le problĂšme de leur identification beaucoup plus frĂ©quent et mĂȘme pluriquotidien, en mĂȘme temps qu’elle a permis une meilleure connaissance de leurs potentialitĂ©s Ă©volutives, Ă©lĂ©ment majeur de leur prise en charge thĂ©rapeutique puisque selon certains travaux rĂ©cents, 30 % des adĂ©nocarcinomes ductaux du pancrĂ©as seraient issus de la dĂ©gĂ©nĂ©rescence de lĂ©sions initialement bĂ©nignes de type tumeurs intracanalaires papillaires et mucineuses (TIPMP) (devenues les plus frĂ©quentes des tumeurs kystiques du pancrĂ©as). Les TIPMP intĂ©ressant le canal pancrĂ©atique principal ont un potentiel de malignitĂ© Ă©levĂ© puisque leur risque de dĂ©gĂ©nĂ©rescence est estimĂ© Ă  50 % Ă  cinq ans. Elles doivent donc thĂ©oriquement faire l’objet d’une exĂ©rĂšse la plus complĂšte possible en s’efforçant d’éviter au maximum la pancrĂ©atectomie totale, grevĂ©e de lourdes sĂ©quelles nutritionnelles et fonctionnelles. Cette thĂ©rapeutique chirurgicale doit bien sĂ»r ĂȘtre discutĂ©e en fonction de l’espĂ©rance de vie et du risque chirurgical chez chaque patient, en rĂ©union de concertation pluridisciplinaire. Les TIPMP n’intĂ©ressant que des canaux secondaires du pancrĂ©as ont un risque de dĂ©gĂ©nĂ©rescence de l’ordre de 5 Ă  10 % Ă  cinq ans. Elles doivent donc faire l’objet d’une surveillance par l’imagerie en coupes haute rĂ©solution pendant cinq ans et leur exĂ©rĂšse ne sera rĂ©alisĂ©e qu’en cas d’apparition d’élĂ©ments macroscopiques inquiĂ©tants. Contrairement aux adĂ©nomes mucineux et, Ă  un moindre degrĂ© sĂ©reux, qui sont rencontrĂ©s avec une nette prĂ©dilection dans le sexe fĂ©minin, les TIPMP sont observĂ©es avec une frĂ©quence globalement identique dans les deux sexes, tandis que l’exceptionnel kyste lymphoĂ©pithĂ©lial est l’apanage de l’homme d’ñge moyen.Cystic tumors of the pancreas were considered to be rare. Their radiologic diagnosis has been dominated by their distinction from post necrotic and retention pseudocysts. Widespread use of cross-sectional imaging with high resolution CT and MRI has revealed their real prevalence. Their identification has become a common daily problem. These new imaging procedures have also enabled a better understanding of their potential for degeneration, a determining factor for treatment. According to recent clinical research studies, 30% of common ductal pancreatic adenocarcinomas would issue from the degeneration of previous benign intraductural papillary mucinous neoplasms (IPMN) lesions (which have now become the most frequently encountered cystic pancreatic tumor). IPMN involving the main pancreatic duct have a very high malignant potential; at five years, the estimated risk of degeneration is 50%. Theoretically treatment involves as complete as possible resection, with the main goal of avoiding total pancreatectomy and the subsequent serious nutritional and functional sequelae. This surgical treatment must be discussed with a multidisciplinary staff, considering each individual patient’s life expectancy and surgical risk. The five-year risk of degeneration for IPMN limited to the secondary pancreatic ducts ranges from 5 to 10%. A five-year follow-up is thus indicated for these patients; surgical resection can be proposed if mural nodules develop. Unlike mucinous and, to a lesser extent, serous adenoma, lymphoepithelial cysts of the pancreas are mainly encountered in the mid-aged male population

    Benign metastasizing leiomyoma with lung cystic lesions and pneumothoraces: A case report

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    AbstractBenign metastasizing leiomyoma (BML) affects women of the middle age, and is a rare disease. Typically, in BML, uterine leiomyoma, and lung nodes are found. In the literature, only 3 cases of large cysts have been reported. In our case, we describe a patient with uterine leiomyoma with lung cysts, and several pneumothoraces

    Comparaison des mĂ©thodes 2D et 3D dans l’évaluation des fonctions ventriculaires globales en scanner multi-dĂ©tecteurs

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    International audiencePURPOSE: To compare two methods of post processing cardiac CT data to measure global ventricular function. Materials and methods. Retrospective study where three readers measured the end-diastolic volume (EDV), end-systolic volume (ESV) and ejection fraction (EF) of the right (n=22) and left (n=44) ventricles, using a 2D method (extrapolated volumetric method, EVM) and a 3D method (direct volumetric method, DVM) after cardiac CT with retrospective ECG gating. Inter- and intraobserver agreement were calculated based on the intraclass correlation coefficient (ICC) with 95% confidence interval (CI95%), and results obtained with each method were compared using the student t test for paired samples. RESULTS: Inter- and intraobserver reproducibility were very good for both methods, with ICC ranging between 0.694 and 0.992, without significant difference. For the left ventricle, EDV, ESV and EF were 16653 ml, 8351 ml and 5415% for DVM et de 20361 ml, 11558 ml and 4613% for EVM respectively. Right ventricular values were 15247 ml, 7534 ml, 5013% and 17253 ml, 9940 ml, 439% (p<0,0001). CONCLUSION: The very good inter- and intraobserver reproducibility for both methods validate their use in clinical practice. Volume measurements with DVM are always inferior to volumes with EDM, with inverse relationship for EF measurements.Objectifs.Évaluer comparativement deux mĂ©thodes de post-traitement en scanner cardiaque de mesures de la fonction ventriculaire globale.MatĂ©riels et mĂ©thodes.Dans cette Ă©tude rĂ©trospective, trois opĂ©rateurs ont mesurĂ© les volumes tĂ©lĂ©diastolique (VTD) et tĂ©lĂ©systolique (VTS), et la fraction d’éjection (FE) des ventricules droits (n = 22) et gauches (n = 44), avec une mĂ©thode 2D (mĂ©thode volumique extrapolĂ©e, MVE) et une 3D (mĂ©thode volumique directe, MVD), chez des patients ayant eu un scanner cardiaque avec synchronisation rĂ©trospective Ă  l’ECG. L’évaluation des reproductibilitĂ©s inter et intra-observateurs a Ă©tĂ© fondĂ©e sur le coefficient de corrĂ©lation intraclasse (CCIC) et son intervalle de confiance Ă  95 % (IC95 %), et les rĂ©sultats obtenus par les deux mĂ©thodes ont Ă©tĂ© comparĂ©s par le test t de Student sur sĂ©ries appariĂ©es.RĂ©sultats.Les reproductibilitĂ©s inter et intra-observateurs Ă©taient trĂšs bonnes pour les deux mĂ©thodes, avec des CCIC variant de 0,694 Ă  0,992, sans diffĂ©rence significative. Pour le ventricule gauche, les VTD, VTS et FE Ă©taient respectivement de 166 53 ml, 83 51 ml et 54 15 % par MVD et de 203 61 ml, 115 58 ml et 46 13 % par MVE. Ils Ă©taient de 152 47 ml, 75 34 ml, 50 13 % et de 172 53 ml, 99 40 ml, 43 9 % pour le ventricule droit (p < 0,0001).Conclusion.Les trĂšs bonnes reproductibilitĂ©s inter et intra-observateur des deux mĂ©thodes testĂ©es valident leur utilisation en clinique. Les volumes mesurĂ©s en MVD sont toujours infĂ©rieurs Ă  ceux en MVE, avec une diffĂ©rence inverse en terme de FE

    La radiofréquence dans le traitement palliatif à visée antalgique des tumeurs des parties molles

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    National audienceBut : Évaluer l'efficacitĂ© de la radiofrĂ©quence comme traitement antalgique Ă  visĂ©e palliative dans la prise en charge des tumeurs des parties molles. MatĂ©riel et mĂ©thode : Etude rĂ©trospective ayant portĂ© sur 12 patients en soins palliatifs prĂ©sentant des tumeurs des parties molles (5 tumeurs primitives dont 4 sarcomes et 1 PECOME et 7 tumeurs mĂ©tastatiques) avec des douleurs rĂ©fractaires aux traitements usuels. La radiofrĂ©quence Ă©tait effectuĂ©e sous guidage tomodensitomĂ©trique ou Ă©chographique. RĂ©sultats : L'efficacitĂ© du traitement a Ă©tĂ© Ă©valuĂ©e par cotation de la douleur et sur les modifications apportĂ©es au traitement aprĂšs la radiofrĂ©quence. La rĂ©ponse antalgique Ă©tait jugĂ©e absente, partielle ou totale. Nous avons observĂ© 100% de rĂ©ponse antalgique Ă  court terme dont 43% de rĂ©ponse totale, 70% de rĂ©ponse antalgique Ă  moyen terme et 83% Ă  long terme. En outre, nous avons observĂ© une rĂ©duction des doses et effets secondaires des traitements morphiniques et parfois une amĂ©lioration de symptĂŽmes fonctionnels. Un seul cas de complication post-radiofrĂ©quence sous forme d'une collection sĂ©ro-hĂ©matique au sein du foyer de nĂ©crose. Conclusion : Le traitement antalgique Ă  visĂ©e palliative des tumeurs des parties molles par radiofrĂ©quence reprĂ©sente un complĂ©ment intĂ©ressant aux traitements usuels. Il permet une amĂ©lioration de la qualitĂ© de vie et n'induit que peu de complications

    Additional benefit of procalcitonin to C-reactive protein for assessing disease activity and severity in Crohn's disease: Procalcitonin in inflammatory bowel diseases

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    International audienceBackground: Serum procalcitonin level (SPL) may reflect non-infectious inflammation. Aim: To assess the correlation of SPL with clinical, biological, endoscopic and radiological markers of disease activity in inflammatory bowel diseases (IBD) and to evaluate the additional diagnostic benefit of measuring SPL to that of C-reactive protein (CRP) for disease activity appraisal. Methods: We performed a prospective observational study. Spearman's rank correlation and receiver operating characteristic analysis were used to evaluate correlation and diagnostic accuracy, respectively. Results: In Crohn's disease (CD) (n=30), SPL was strongly correlated with clinical, biological, endoscopic and radiological disease activity markers. In CD, a SPL >0.14 ”g/L demonstrated a high accuracy for detecting severe disease (Sensitivity=100%; Specificity=96%; AUROC=0.963; P=0.0001). The diagnostic accuracy of the 'SPL-CRP strategy' (CRP >5 mg/L and SPL >0.05 ”g/L) was significantly superior to that of CRP alone for diagnosing severe CD (AUROC=0.783 versus 0.674; P=0.01). In ulcerative colitis (UC) (n=27), SPL was correlated with CRP and with endoscopic and radiological disease activity markers. Conclusions: In CD, the SPL was correlated with all disease activity markers and a cut-off of 0.14 ”g/L could distinguish severe forms of the disease. The 'SPL-CRP strategy' was superior to CRP alone for diagnosing active or severe CD

    Mucocele of the appendix and pseudomyxoma peritonei

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    International audienceA mucocele of the appendix corresponds to mucinous distension of the appendix. Rupture, the most severe complication, leads to pseudomyxoma peritonei (PMP) which frequently is associated with a poor prognosis. The main role of medical imaging is to provide presurgical diagnosis so that all precautions may be taken to avoid per operative rupture and peritoneal seeding. Early diagnosis of pseudomyxoma is also important to allow early radical surgery in patients with peritoneal involvement to reduce recurrences. Radiologists must be familiar with the imaging features of this entity since imaging frequently is the fist step in the diagnosis and management of this pathology and may contribute in avoiding errors with devastating impact on prognosis. In this pictorial essay, the imaging features of 12 cases of mucocele of the appendix and 8 cases of PMP will be reviewed

    Mucocele of the appendix and pseudomyxoma peritonei

    No full text
    International audienceA mucocele of the appendix corresponds to mucinous distension of the appendix. Rupture, the most severe complication, leads to pseudomyxoma peritonei (PMP) which frequently is associated with a poor prognosis. The main role of medical imaging is to provide presurgical diagnosis so that all precautions may be taken to avoid per operative rupture and peritoneal seeding. Early diagnosis of pseudomyxoma is also important to allow early radical surgery in patients with peritoneal involvement to reduce recurrences. Radiologists must be familiar with the imaging features of this entity since imaging frequently is the fist step in the diagnosis and management of this pathology and may contribute in avoiding errors with devastating impact on prognosis. In this pictorial essay, the imaging features of 12 cases of mucocele of the appendix and 8 cases of PMP will be reviewed
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