Dataset Information

Multidetector CT appearance of the pelvis after vaginal delivery: normal appearances and abnormal acute findings.

ABSTRACT: Vaginal delivery is the most commonly performed delivery in the world and accounts for nearly two-thirds of all deliveries in the United States. It is a secure method but may be associated with some acute complications, especially in the immediate postpartum days, which can potentially be fatal for the mother. The most frequent acute complications are hemorrhages/hematomas, uterine rupture, endometritis, retained product of conception (RPOC), ovarian thrombosis and HELLP syndrome (hemolysis, elevated liver enzymes, low platelet count). A first evaluation of the clinical status of the patients is executed by the clinicians who, depending on their experience, perform ultrasonography by themselves and eventually may request further radiologic exams in doubtful cases. Radiologists may play an important role recognizing early postpartum complications and differentiating them from physiologic postoperative findings. In this setting, the use of multidetector computed tomography (MDCT) is important for diagnosis of suspected postpartum complications. The aim of this article is to review the normal and abnormal post vaginal delivery MDCT aspects in order to help the clinical management by preventing misdiagnoses and tailoring the best medical treatments.

SUBMITTER: Gui B

PROVIDER: S-EPMC6521907 | biostudies-other | 2019 May

REPOSITORIES: biostudies-other

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Multidetector CT appearance of the pelvis after vaginal delivery: normal appearances and abnormal acute findings.

Gui Benedetta B Corvino Miriam M Grimaldi Pier Paolo PP Russo Luca L Marco Margo Di MD Valentini Anna Lia AL Carducci Brigida B Lanzone Antonio A Manfredi Riccardo R

Diagnostic and interventional radiology (Ankara, Turkey) 20190501 3

Vaginal delivery is the most commonly performed delivery in the world and accounts for nearly two-thirds of all deliveries in the United States. It is a secure method but may be associated with some acute complications, especially in the immediate postpartum days, which can potentially be fatal for the mother. The most frequent acute complications are hemorrhages/hematomas, uterine rupture, endometritis, retained product of conception (RPOC), ovarian thrombosis and HELLP syndrome (hemolysis, ele ...[more]

PMID: 31063140

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Project description:BackgroundTo demonstrate and analyze the relatively common imaging findings in this rare primary pleural angiosarcoma (PPA).Case presentationThree cases of PPA, proven by video-assisted thoracic surgery biopsies are retrospectively reviewed. Patients were all male. Age ranges from 65 to 75 years old age (mean; 69). Major chief complaints were dyspnea and chest pain. One has a history of colon cancer, the other has a tuberculosis history and the other has no known history. Multidetector chest CT and PET CT were all done. Immunohistochemical studies were performed including CD31, CD34, or factor VIII-related antigen, vimentin, and cytokeratin. We also review the literatures on recently published PPA. All masses were from 1 to 10 cm. All three patients had multiple pleural based masses, which were ovoid in shape with relatively sharp margin in unilateral hemithorax. Multiple small circumscribed pleural masses are limited in the pleural space in two patients, whereas two, huge lobulated masses about up to 10 cm were present with pleural and extrapleural involvement in one patient. In two patients with pleural mass only, multiple pleural masses were only seen in parietal pleura in one patient and were in both visceral and parietal pleura in one patient. Pleural effusion were found in one side in one patient and in both sides in one patient. One angiosarcoma was arised from chronic tuberculotic pleurisy sequelae. All pleural masses are heterogenous with irregular internal low densities in all patients. Hematogenous metastases were found in liver, vertebra, rib in one patient, and were in lungs with mediastinal lymph node metastases in the other patient. Three patients survived for longer than 3months after diagnosis, but continued to deteriorate rapidly. Two patients underwent chemotherapy after surgical excision, and the other one with multiple metastases treated chemotherapy after CT-guided biopsy, but eventually all died. As a result of comparative analysis of a total of 13 patients' images including 10 cases previously published, there was pleural effusion in all except 2 cases.ConclusionsPPA were all necrotic without any vascularized enhancing nature, and manifested as unilateral circumscribed or localized pleural-based masses.

Project description:PurposeOrgan autosegmentation efforts to date have largely been focused on adult populations, due to limited availability of pediatric training data. Pediatric patients may present additional challenges for organ segmentation. This paper describes a dataset of 359 pediatric chest-abdomen-pelvis and abdomen-pelvis Computed Tomography (CT) images with expert contours of up to 29 anatomical organ structures to aid in the evaluation and development of autosegmentation algorithms for pediatric CT imaging.Acquisition and validation methodsThe dataset collection consists of axial CT images in Digital Imaging and Communications in Medicine (DICOM) format of 180 male and 179 female pediatric chest-abdomen-pelvis or abdomen-pelvis exams acquired from one of three CT scanners at Children's Wisconsin. The datasets represent random pediatric cases based upon routine clinical indications. Subjects ranged in age from 5 days to 16 years, with a mean age of 7 years. The CT acquisition, contrast, and reconstruction protocols varied across the scanner models and patients, with specifications available in the DICOM headers. Expert contours were manually labeled for up to 29 organ structures per subject. Not all contours are available for all subjects, due to limited field of view or unreliable contouring due to high noise.Data format and usage notesThe data are available on The Cancer Imaging Archive (TCIA_ (https://www.cancerimagingarchive.net/) under the collection Pediatric-CT-SEG. The axial CT image slices for each subject are available in DICOM format. The expert contours are stored in a single DICOM RTSTRUCT file for each subject. The contour names are listed in Table 2.Potential applicationsThis dataset will enable the evaluation and development of organ autosegmentation algorithms for pediatric populations, which exhibit variations in organ shape and size across age. Automated organ segmentation from CT images has numerous applications including radiation therapy, diagnostic tasks, surgical planning, and patient-specific organ dose estimation.

Dataset Information

Multidetector CT appearance of the pelvis after vaginal delivery: normal appearances and abnormal acute findings.

Publications

Multidetector CT appearance of the pelvis after vaginal delivery: normal appearances and abnormal acute findings.

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