Andrew Mong | PubMed Health

PubMed2006

Imaging the pediatric prostate.

The prostate gland is not often the target of imaging in children but may be imaged during investigation of symptoms related to the lower genitourinary tract such as hematuria, urinary retention, dysuria, and incontinence or during an evaluation for suspected congenital anomalies. Ultrasound and voiding cystourethrography are useful for initial evaluation of congenital and neoplastic disorders of the prostate. MR imaging and CT are useful in delineating more detailed anatomy before surgical planning and in determining the organ of origin in a patient who has a large pelvic mass.

Child↗

PubMed2005

Accuracy of magnetic resonance imaging in predicting absence of fixation of head and neck cancer to the prevertebral space.

BACKGROUND: The purpose of this study was to determine the preoperative accuracy of preservation of the retropharyngeal fat plane on magnetic resonance (MR) images in predicting the absence of fixation or extension of head and neck carcinomas to the prevertebral space. METHODS: The MR images of 75 patients with T3 or T4 primary pharyngeal or laryngeal cancers seen over a 5-year period and treated at our Head and Neck Cancer Center were retrospectively reviewed. The MR images were independently and blindly evaluated by two head and neck radiologists for preservation of the retropharyngeal fat plane between the tumor and prevertebral musculature. In cases in which the fat was preserved, the prevertebral muscle complex was assessed for the presence of T2 hyperintensity and enhancement. All patients underwent panendoscopy, surgery, or both. RESULTS: Forty of 75 patients had preservation of the retropharyngeal fat plane between the tumor and the prevertebral compartment on T1-weighted images. In all 40 cases, the prevertebral muscles had a normal appearance on T2-weighted and enhanced MR images. Intraoperative assessment revealed absence of fixation of tumor to the prevertebral fascia in 39 of 40 cases, and these tumors were resectable. CONCLUSION: In patients with advanced head and neck carcinomas, preservation of the fat between the tumor and the prevertebral musculature on unenhanced T1-weighted images reliably predicts absence of prevertebral space fixation.

Adipose Tissue↗

PubMed2003

Epiglottic carcinoma as a cause of laryngeal penetration and aspiration.

OBJECTIVE. The purpose of our investigation was to review a series of patients with epiglottic carcinoma to elucidate the clinical and videofluoroscopic findings in these individuals. CONCLUSION. Patients with epiglottic carcinoma often present with symptoms of aspiration or pharyngeal dysphagia of relatively brief duration in the absence of a preexisting neurologic disease. In this clinical setting, barium studies are useful not only for detecting the epiglottic carcinoma but also for delineating the presence and mechanism of laryngeal penetration or tracheobronchial aspiration.

Adult↗