Biomedical subjects

Li-Jen Wang

Publications and source records attributed to Li-Jen Wang.

21 records · Page 2Linked to original sources

PubMed2002

Perisplenic extravasation of contrast medium on enhanced helical computed tomography: a reliable indicator for early surgical management in blunt splenic injuries.

BACKGROUND: The purpose of this study was to determine the predictive value of perisplenic contrast material extravasation (CME) on contrast-enhanced helical computed tomography (CT) for early surgical management in blunt splenic injuries. METHODS: During a 12-month period, 80 patients who underwent computed tomography (CT) examinations and were discharged with the diagnosis of blunt splenic injury were included in this retrospective study. All CT scans were reviewed for perisplenic CME and the grades of splenic injuries. Their medical charts were independently reviewed for the choice of treatment and the time interval between CT and spleen-related laparotomy. RESULTS: Of the 80 CT scans, six (7.5%) were positive and 74 (92.5%) were negative for perisplenic CME. Forty scans were of low-grade injuries, 40 were of high-grade injuries. All six (100%) patients with perisplenic CME underwent spleen-related surgery, whereas 29 (39.2%) patients without CME required surgery (p=0.005). The time interval between CT and laparotomy was 1.6 +/- 1.0 hours for patients with CME, and 7.6 +/- 12.9 hours for patients without CME (p=0.028). Similar comparisons of the laparotomy frequency and time intervals between CT and laparotomy in the low-grade and high-grade injury groups did not show any significant differences. CONCLUSION: Perisplenic CME detected on contrast-enhanced helical CT was a more reliable predictive criterion than the grading scheme based on the depth of lacerations for early surgical management in blunt splenic injuries.

Adolescent↗

PubMed2002

Delayed gadolinium enhancement in epidural space of the cervicothoracic spine in a patient with spontaneous intracranial hypotension.

Spontaneous intracranial hypotension (SIH) due to a spinal cerebrospinal fluid leak is a rare but increasing cause of postural headache. Its extravasated epidural fluid collection tends to be non-enhanced or mildly enhanced on enhanced magnetic resonance (MR) imaging. The mild enhancement of the epidural fluid in SIH is usually attributed to fenestrated neovascularization provoked by an inflammatory component, such as blood, of the fluid collection. In this report, we present a case of SIH with a prominent delayed enhancement of the spinal epidural fluid collection on MR imaging. Subsequent vertebral angiography revealed that this delayed enhancement was related to contrast extravasation from a torn anterior meningeal branch of the right vertebral artery. Therefore, we suggest that contrast extravasation from a torn meningeal vessel may be a possible cause of the enhancement in the spinal epidural fluid of SIH.

Cervical Vertebrae↗

PubMed2001

Adenocarcinomas arising from primary retroperitoneal mature teratomas: CT and MR imaging.

An adenocarcinoma arising from mature teratoma is one form of teratoma with malignant transformation. It is extremely rare but highly malignant. The authors report two patients with adenocarcinomas arising from primary retroperitoneal teratomas. The CT and MRI findings of the tumors are presented with emphasis on imaging features implying the presence of malignant transformation and differing from those of pure benign mature teratoma. Correct diagnosis of the presence of malignant transformation from a benign mature teratoma can be made as early as possible by awareness of the imaging features.

Adenocarcinoma↗