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Biomedical subjects

B D Toombs

Publications and source records attributed to B D Toombs.

29 records · Page 2Linked to original sources

Radiology of the bladder and urethra in blunt pelvic trauma.

Appropriate radiologic studies are mandatory for assessing the extent and nature of lower urinary tract injuries following blunt pelvic trauma. A flow sheet summarizing these radiographic studies is presented in Figure 24. With pelvic fracture, two injuries may be found--extraperitoneal rupture of the bladder and rupture of the posterior urethra. In some patients, these injuries may be combined. Intraperitoneal rupture of the bladder occurs as a result of a blow to the lower abdomen or pelvis in patients whose urinary bladder is distended at the time of injury. A pelvic fracture may or may not be present. Anterior urethral injuries are more commonly associated with instrumentation in the male patient; they may, however, occur as a result of blunt injury to the external genitalia or perineum.

Fractures, Bone↗

Computed tomography in blunt trauma.

Until now, CT has been utilized very little in the evaluation of the bluntly traumatized patient. Based on our early experience, we have attempted to demonstrate the CT features of a spectrum of injuries. Much of this information is new and additional studies will have to be performed to elucidate fully the benefits of computed tomography in the diagnosis of trauma. A method of study has been outlined which stresses the use of intravascular, oral, and, when needed, rectal contrast materials for study in these patients.

Abdominal Injuries↗

CT demonstration of pancreatic transection: a case report and comparison with other diagnostic modalities in the evaluation of blunt pancreatic trauma.

A case of prevertebral pancreatic transection demonstrated by pre-operative computed tomography is presented. The dramatic demonstration of pancreatic transection in this case suggests that CT scanning should be considered among the first-line modalities in the evaluation of suspected pancreatic injuries. In addition, the value of other diagnostic modalities in the evaluation of this disorder is reviewed.

Adult↗

Computed tomography of hepatic fracture: a case report.

A case of hepatic fracture is presented in which computed tomography (CT) played a major role in the diagnosis. The fracture, which was suggested on scintigraphy, was easily demonstrated on CT as a low-density hematoma. The advantages and potential use of CT in this clinical setting are discussed.

Child↗

Urinary excretion of 99mTc administered as microspheres.

99mTc-albumin microspheres were administered intravenously and urinary radioactivity was determined for various periods up to 25 hours. The average accumulated urinary level was 0.68% of the injected dose at 1 hour and 18.6% at 24 hours. The averaged bladder wall dose was 101.98 mrad (1,019.79 muGy) based on an administered dose of 3 mCi (111 MBq). While the chemical state of the excreted 99mTc was primarily free pertechnetate, some reduced 99mTc species were also excreted. The appearance of 99mTc in the kidneys within the first 15 minutes following injection should not be considered unusual, nor necessarily indicative of right-to-left shunting.

Humans↗

"Ballooned" calyceal diverticulum with ureteral obstruction.

Calyceal diverticula are infrequently seen during routine urography. When present, one must look for important associated complications. Two patients had ureteral obstruction in conjunction with "ballooned" calyceal diverticula. This rare combination may give rise to the erroneous diagnosis of a renal mass.

Adult↗

Clinical implications of the convex supradiaphragmatic inferior vena cava.

The configuration of the supradiaphragmatic segment of the inferior vena cava (SIVC) was evaluated on lateral chest radiographs to determine the clinical situations in which a posterior convex contour occurred. Of 34 patients with a convex SIVC, 31 had cardiovascular abnormalities. Left ventricular enlargement was present in 17 of 34 (50%), and right ventricular failure in 13 (38%). Valvular regurgitation, left-to-right shunts, narrow anteroposterior chest diameter, and chronic obstructive lung disease were also present. In 102 consecutive normal patients, the SIVC was visible in 97%; only 1 patient had a convex SIVC (p = 10(-7)). The results show that detection of a convex SIVC suggests associated abnormalities.

Adolescent↗

Metastatic disease to the breast: clinical, pathologic, and radiographic features.

Metastatic lesions to the breast are unusual. We add 21 cases to the previously reported 131 clinical cases. The most common sources are malignant melanomas and the lymphoma/leukemia group. Metastatic lesions to the breast tend to be painless discrete lumps that are generally small at the time of discovery. They usually occur in the upper outer quadrant and are commonly associated with axillary adenopathy. Occasionally, they are the initial manifestation of an occult extramammary primary cancer. Prognosis is poor but appears slightly improved since availability of more refined chemo- and immunotherapeutic regimens. The clinical, pathologic, and radiographic features of this problem are described.

Adult↗