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Biomedical subjects

B S Jing

Publications and source records attributed to B S Jing.

At least 19 recordsLinked to original sources
PubMed1992

Current use of lymphography for staging lymphomas and genital tumors.

The current literature and the experience at The University of Texas M.D. Anderson Cancer Center were reviewed to determine the current status of the use of lymphography for staging of malignant disease. Lymphography continues to be used for staging and surveillance of the lymphomas and, to some extent, for staging of carcinoma of the cervix. Testicular tumors are now primarily staged and followed by CT and serum markers. Currently, other abdominal and pelvic tumors are not commonly evaluated with lymphography.

Female↗
PubMed1992

The characteristics and significance of intrathoracic and abdominal pressures during Qigong (Q-G) maneuvering.

In order to investigate the mechanism of raising the blood pressure by the Qigong (Q-G) maneuver, the changes of esophageal and gastric pressures were determined during this maneuver, and the data were compared with those from the L-1 maneuver. Eight subjects performed the Q-G maneuver at +1 Gz; their esophageal pressures (mean +/- S.D.) were -6.7 +/- 2.1 mm Hg in the inspiratory phase and 0.1 +/- 3.7 mm Hg in the expiratory phase; intragastric pressures (mean +/- S.D.) were 69.5 +/- 20.2 mm Hg and 63.4 +/- 22.6 mm Hg, respectively. In 22 centrifuge runs at +4.0 to 7.5 Gz and during Q-G maneuvering, 5 subjects had esophageal pressures of -9.0 +/- 3.3 mm Hg in the inspiratory phase and 1.6 +/- 7.2 mm Hg in the expiratory phase, and gastric pressures of 140.6 +/- 23.2 mm Hg and 138.7 +/- 29.5 mm Hg, respectively. The results showed that during Q-G maneuvering, even with a high-G load, the thoracic pressure remained negative or at low pressures while gastric pressures were remarkably raised. They both fluctuated little during respiration; therefore, a relatively large and constant pressure gradient between abdominal and thoracic pressures was maintained. Here lies the significant characteristic of blood pressure raising by the Q-G maneuver. It might possess theoretical significance for further study and development of anti-G maneuvers.

Adult↗
PubMed1979

Computerized tomography in rhabdomyosarcoma of the head and neck.

Rhabdomyosarcoma of the head and neck may be treated with surgery, radiotherapy and chemotherapy or a combination thereof. Precise delineation of the full extent of the tumor in the head and neck is essential. Routine radiographs with hypocycloidal tomography and CT are complementary in defining the full extent of the lesion. Tomography is superior to CT scanning in demonstrating fine bone detail. Demonstration of the soft tissue tumor and its extensions is better seen on CT. The ability to discriminate differences more accurately in densities allows computerized tomography to appreciate better the integrity of the bone margins such as the thin walls of the sinuses.

Adolescent↗
PubMed1979

Lymphangiography in staging of carcinoma of the prostate: the potential value of percutaneous lymph node biopsy.

Bilateral pedal lymphangiography was performed in the staging of 208 patients with prostatic carcinoma. Forty-seven (23%) were found to have lymph node involvement, and 40 of these 47 had Stage C disease. Nine per cent of the Stage C1 patients (moderately advanced disease) and 37% of Stage C2 (massive carcinoma) had lymph node metastases. The distribution of the abnormal nodes was in continuity with the lymph node drainage from the prostate. The external iliac nodes were the most frequent site of metastases. Histological confirmation was obtained in 20 of the 40 positive Stage C2 cases. More recently, percutaneous aspiration biopsy of the opacified nodes was used to document the presence of metastic disease, thereby extending the value of lymphangiography.

Carcinoma↗
PubMed1979

Computed tomography diagnosis of mesenteric masses.

The computed tomographic findings of 30 mesenteric masses are presented. To delineate the mesentery accurately, oral contrast material must fill the entire small bowel. Of the masses, 23 were secondary to non-Hodgkin's lymphoma. These masses were irregular in shape and homogeneous in their tissue attentuation. Two of the 23 had a normal lymphangiogram in the upper paraaortic area. Both lymphangiography and CT were necessary to define the extent of disease in such patients. The six mesenteric metastases were irregular in shape. Four of these had areas of decreased attentuation eccentrically located within the mass which may be secondary to necrosis. One mesenteric cyst had a circular shape with smooth, sharp borders, and a centrally located area of decreased attenuation.

Adult↗
PubMed1979

Radiographic features of olfactory neuroblastoma.

Olfactory neuroblastomas are malignant, slowly growing neurogenic tumors originating from the olfactory mucosa of the nasal cavity. Fourteen patients with this tumor were evaluated and showed variable extension into adjacent structures such as the ethmoid and sphenoid sinuses, orbit, and anterior cranial cavity.

Adolescent↗
PubMed1978

Computerized tomography or paranasal sinus neoplasms.

Computerized tomography represents a new and valuable diagnostic tool to the otolaryngologist and head and neck surgeon in several ever-increasing aspects of his clinical practice. This report presents CT scans utilizing the E.M.I 5005 body scanner on patients with neoplasms of the paranasal sinuses presenting to the Head and Neck Service of The University of Texas System Center M. D. Anderson Hospital and Tumor Institute. Only patients undergoing surgical resection of such lesions are included so that actual operative and surgical pathological findings can be used for critical comparison of diagnostic information derived from polytomography and computerized tomography. Seven illustrative cases are presented. In general, computerized tomography has been found to be equal to polytomography in assessing bone destruction or involvement by tumor, and superior to polytomography in determining accurately the soft tissue extent of disease. CT scanning, however, has been found to have limitations in the delineation of soft tissue disease in areas of high contrast in tissue density, and in the evaluation of possible intracranial tumor extension in isodense, avascular lesions.

Aged↗
PubMed1978

Lymphangiography in patients with malignancy in a non-descended testicle.

Lymphangiography was performed on 23 patients with malignancy in non-descended testicles, 14 of whom had seminomatous and 9 non-seminomatous tumors. Lymph node metastases were shown by lymphangiography in 8 patients: 3 in lumbar nodes, 1 in iliac nodes alone and 4 in lumbar and iliac lymph nodes. Microscopic metastases were shown in lumbar nodes at retroperitoneal lymph node dissection in 2 patients when the lymphangiograms were negative. Iliac lymph node metastases are rare in testicular tumors but may be seen in tumors of non-descended testicles, alone or in combination with lumbar metastatic disease. This information is extremely important for the radiologist as well as the clinician in the management of patients.

Adult↗
PubMed1978

Radiographic findings of Ewing's sarcoma of the jaws.

The radiographic findings in eight cases of Ewing's sarcoma of the jaws are analysed in detail. Similar findings to those in peripheral skeletal involvement were demonstrated including: (a) permeative bone destruction, (b) periosteal reaction, and (c) extraosseous soft tissue mass. Specific to the jaws is the occurrence of dental displacement without destruction. The differential diagnosis of Ewing's sarcoma of the jaws is discussed in detail and illustrated.

Adolescent↗
PubMed1978

Laryngocele.

Laryngocele occurs more commonly than the literature indicates. Until recently, most were diagnosed clinically in the symptomatic patient. Although laryngocele is usually asymptomatic, greater numbers are being diagnosed because more patients suspected of head and neck cancer are undergoing sophisticated diagnostic radiographic procedures. Of 2,068 patients studied at M.D. Anderson Hospital and Tumor Institute for suspected laryngeal or hypopharyngeal cancer, 87 (4.2%) had laryngoceles. Three types of laryngocele are recognized: internal, external, and combined. They may be congenital or acquired and occur at any age. The coexistence of carcinoma and laryngocele has been discussed often enough in the literature to suggest a direct relationship; however, this series yielded no substantive evidence to implicate laryngocele as a precursor of carcinoma. The radiographic procedures currently used which readily establish the presence of laryngoceles are lateral soft tissue radiography of the neck, anteroposterior tomography of the larynx, and contrast laryngography.

Humans↗
PubMed1978

Malignant tumors of the larynx.

A rational choice of treatment for patients with malignant tumors of the larynx depends upon a thorough evaluation of the location, size, and extent of the lesion. Roentgenological examinations of the larynx are a valuable adjunct to clinical and laryngoscopic examinations. In interpretation of roentgenographic findings of malignant tumors of the larynx, a good knowledge of the anatomy of the head and neck, and of the nature, history, and routes of spread of the lesions of the larynx is essential. A correct interpretation needs careful scrutiny of all the roentgenograms; only a persistent abnormality should be regarded as significant. Many of the changes are subtle and require judicious elucidation. Others are quite straightforward and easily recognized. Constant attention to details and willingness to use wisely the different techniques are necessary if the maximum contribution to the diagnosis and management of malignant tumors of the laynx is to be achieved.

Glottis↗
PubMed1977

Lymphangiography in the determination of the extent of metastatic carcinoma: the potential value of percutaneous lymph node biopsy.

In determining the extent of disease in patients with carcinoma, lymphangiography when read as positive has an accuracy of 90 to 95%. When considered negative 15 to 20% prove to have metastatic disease. the recent use of percutaneous transperitoneal aspiration biopsy of previously opacified lymph nodes has enhanced the value of lymphangiography. Eighty percent of the aspiration biopsies yield sufficient tissue for cytologic diagnosis.

Adult↗
PubMed1977

Changes in the lymphatic dynamics after retroperitoneal lymph node dissection.

Lymphatic dynamics in the retroperitoneal space are altered after retroperitoneal lymph node dissection. Obstruction with or without visible collaterals is seen frequently. Lymphaticovenous communications and lymphocysts are also common findings. The immediate sequelae are of minor importance, although the mass effect of lymphocysts may be serious. The collateral pathways and lymphaticovenous anastomoses may result in the appearance of metastases in unusual sites.

Adolescent↗
PubMed1977

A new radiological technique in evaluation of prosthetic fitting.

Xeroradiography is an excellent technique in evaluating the fit of extremity prostheses. Because of its inherent characteristics, xeroradiography can clearly demonstrate the stump-socket relationship. Consequently, the degree of contact achieved and attendant pressure problems, if any, can be precisely determined.

Amputation Stumps↗
PubMed1977

Laryngeal tuberculosis.

Laryngeal lesions observed in patients with pulmonary tuberculosis are most likely tuberculous. Although tuberculosis and carcinoma may be indistinguishable clinically and radiographically, specific radiographic studies better delineate the lesion and may suggest its true etiology. Five cases of laryngeal tuberculosis referred to M.D. Anderson Hospital and Tumor Institute as carcinoma of the larynx are described and illustrated. In the acute exudative type, inflammatory disease was suspected, but in the chronic localized lesion, carcinoma was the primary consideration. The histologic diagnosis was established by biopsy.

Adolescent↗