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  • Assessment of Fluorodeoxyglucose F18–Labeled Positron Emission Tomography for Diagnosis of High-Risk Lung Nodules

    Abstract Full Text
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    JAMA Surg. 2017; doi: 10.1001/jamasurg.2017.4495

    This study determines the performance of fluorodeoxyglucose F18–labeled positron emission tomography with computed tomography in diagnosing lung malignancy across different populations with varying cancer prevalence.

  • JAMA Surgery September 1, 2017

    Figure 1: An Incidental Hypervascular Retroperitoneal Mass

    A, Contrast-enhanced computed tomography scan demonstrating an incidental right infrarenal, retroperitoneal mass measuring 9.7 × 7.7 × 9.1 cm, with dilated tortuous supply from a lumbar artery branch. B, Flush aortogram outlining supply to the mass from a hypertrophied lumbar artery (blue arrowhead) and from a branch of the internal iliac artery (red arrowhead).
  • JAMA Surgery August 30, 2017

    Figure 1: Study Population and Representative Images of Different Grades of Remnant Liver Ischemia (RLI)

    A, Study population. CLMs indicates colorectal liver metastases; CT, computed tomography. B, RLI grade 1 (limited to the margin). Black arrowheads indicate marginal hypoperfusion. C, RLI grade 2 (involving part of a hepatic segment). White arrowhead indicates partial hypoperfusion. D, RLI grade 3 (involving an entire segment VII). White arrowhead indicates right hepatic vein, and black arrowheads indicate segmental hypoperfusion without gas bubble. Grade 4 (necrotic tissue) is characterized by total absence of contrast and presence of intrahepatic gas bubbles on CT, but it was not observed in the present cohort.
  • JAMA Surgery August 9, 2017

    Figure 2: Examples of Discordant Parathyroid 4-Dimensional Computed Tomographic Scans

    The arrowheads point to the location of a candidate intrathyroidal lesion. The top panel shows that an ectopic right inferior gland in the mediastinum was missed on initial review. A, Axial noncontrast computed tomography through the superior mediastinum shows a small nodule anteromedial to the right brachiocephalic vein, just deep to the manubrium of the sternum. B, Axial arterial phase computed tomography shows some enhancement in this lesion, the degree of which is not well determined due to streak artifact from the adjacent inflowing contrast bolus (arrowhead). C, Axial venous phase computed tomography shows similar or slightly greater attenuation in this lesion compared with the arterial phase. This finding was misinterpreted as a reactive lymph node. Two other candidate lesions were identified on this study reflecting hyperplastic orthotopic right superior and left superior glands (not shown), both of which were also abnormal at surgery. The bottom panel shows that a right inferior intrathyroidal parathyroid lesion was mistaken on initial review as a thyroid nodule. D, Axial noncontrast computed tomography is shown. E, This lesion is hyperattenuating to the thyroid on the arterial phase. F, This lesion is isoattenuating to the thyroid on the venous phase. Although this enhancement pattern is also typical of parathyroid adenoma, the lesion was initially dismissed as a likely benign thyroid nodule due to the presence of 2 other high-suspicion candidates, both of which were also abnormal at surgery.
  • JAMA Surgery July 1, 2017

    Figure 1: A Large Right Shoulder Mass

    Cross-sectional computed tomography demonstrating a mass of the right shoulder (arrowhead).
  • JAMA Surgery July 1, 2017

    Figure 2: A Large Right Shoulder Mass

    Coronal section of computed tomography demonstrating an enlarged parathyroid gland at the level of the thoracic inlet (arrowhead).
  • JAMA Surgery June 1, 2017

    Figure 1: Small-Bowel Obstruction in a 45-Year-Old Woman

    Computed tomography of abdomen. A, Coronal view demonstrating obstructing intraluminal lesion (arrowhead). B, Transverse view demonstrating obstructing intraluminal lesion (arrowhead).
  • JAMA Surgery June 1, 2017

    Figure 1: Acute Large-Bowel Obstruction in an Institutionalized Man

    A, A plain abdominal x-ray shows a huge colonic distension and a clear coffee-bean-like or “bent inner tube” sign is visible. B, A computed tomography scan with multiplanar reconstruction.
  • JAMA Surgery June 1, 2017

    Figure 2: Acute Large-Bowel Obstruction in an Institutionalized Man

    A computed tomography scan and a diatrizoate meglumine and diatrizoate sodium enema were performed with a diagnostic and therapeutic purpose, confirming a huge colonic volvulus with a twisted mesentery and a vascular compromise (so-called “whirl-sign” highlighted within the red circle).
  • JAMA Surgery May 1, 2017

    Figure 1: Repeated Lower Gastrointestinal Bleeding

    Axial (A) and coronal (B) computed tomography of the pelvis with rectal contrast. The images show thickening and narrowing of the sigmoid colon (arrowheads).
  • JAMA Surgery April 1, 2017

    Figure 2: Acute Calculous Cholecystitis With Intrahepatic Gallbladder Perforation

    Contrast-enhanced computed tomography performed 5 weeks after presentation showed significant resolution (blue arrowhead). The tip of a percutaneous catheter is seen (black arrowhead). Also seen is the gallbladder with a stone.
  • Association of Radiologic Indicators of Frailty With 1-Year Mortality in Older Trauma Patients: Opportunistic Screening for Sarcopenia and Osteopenia

    Abstract Full Text
    online only
    JAMA Surg. 2017; 152(2):e164604. doi: 10.1001/jamasurg.2016.4604

    This cohort study evaluates whether sarcopenia and/or osteopenia are associated with 1-year mortality in an older trauma patient population.

  • JAMA Surgery February 15, 2017

    Figure 1: Study Participant Flow Diagram.

    AIS indicates Abbreviated Injury Scale; CT, computed tomography; ICU, intensive care unit.
  • JAMA Surgery February 1, 2017

    Figure 1: An Unusual Cause of Intestinal Perforation

    Coronal computed tomography scan showing calcification in the terminal ileum with surrounding enteritis (arrowhead).
  • Mobile Intramural Gastroesophageal Junction Mass

    Abstract Full Text
    JAMA Surg. 2017; 152(2):201-202. doi: 10.1001/jamasurg.2016.4633

    A healthy 43-year-old woman presented with weight loss, heartburn, and progressively worsening dysphagia to solid food. Intriguingly, the heartburn was most severe while she was sitting up but lying supine relieved the symptoms. What is your diagnosis?

  • JAMA Surgery January 18, 2017

    Figure 2: University of California, Los Angeles (UCLA) Algorithm for the Management of Intraductal Papillary Mucinous Neoplasms (IPMN)

    The UCLA algorithm applies to patients with IPMN involving the main duct or the main and branch ducts. CT indicates computed tomography; MPD, main pancreatic duct; MRI, magnetic resonance imaging.
  • JAMA Surgery January 1, 2017

    Figure 1: An Inevitable Surgical Procedure

    A, A computed tomography scan of the abdomen did not show abnormal intestinal air-fluid levels nor free peritoneal air. B, A computed tomography scan revealed that the rectum was not empty.
  • Evaluation of Cervical Spine Clearance by Computed Tomographic Scan Alone in Intoxicated Patients With Blunt Trauma

    Abstract Full Text
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    JAMA Surg. 2016; 151(9):807-813. doi: 10.1001/jamasurg.2016.1248

    This observational study analyzes cervical spine clearance practices and the utility of computed tomographic scans of the cervical spine in intoxicated patients with blunt trauma.

  • Does the Computed Tomographic Scan Tell the Whole Story for Cervical Spine Clearance?

    Abstract Full Text
    JAMA Surg. 2016; 151(9):813-814. doi: 10.1001/jamasurg.2016.1271
  • JAMA Surgery September 1, 2016

    Figure 1: Progressive Abdominal Pain Following Laparoscopic Cholecystectomy

    A, Postoperative computed tomography (CT) of the abdomen demonstrating a lost gallstone in the left hemiabdomen (arrowhead). B, Coronal view of the second CT.