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Biomedical subjects

M J Kaplan

Publications and source records attributed to M J Kaplan.

At least 19 recordsLinked to original sources

Facial paralysis due to benign parotid tumors.

On rare occasions, facial paralysis associated with a parotid tumor need not denote malignancy. We present two cases in which, contrary to appropriate conventional wisdom, facial paralysis resulted from benign mixed tumors. Each patient presented over 8 years following primary surgical excision. In neither patient was a mass palpable, and facial paralysis was the sole sign of recurrent disease. Each patient had been followed up for several months with a presumptive diagnosis of Bell's palsy prior to discovery of recurrent tumor by radiologic imaging. In each case, at operation the tumor was found to infiltrate the temporal bone via the stylomastoid foramen. Facial paralysis presumably resulted from extrinsic compression of the facial nerve. These two cases add to the few previous reports of facial paralysis due to benign parotid gland tumors.

Adenoma, Pleomorphic

The use of closed suction drainage after lumpectomy and axillary node dissection for breast cancer. A prospective randomized trial.

Closed suction drainage has been used to prevent seroma formation after lumpectomy and axillary node dissection for breast cancer. To study the efficacy of closed suction drains, the authors conducted a prospective randomized study from 1987 to 1990 of 227 axillary dissections. One hundred eight were randomized to a drain group (DG) and 119 to a no drain group (NDG). Drains were removed on the first postoperative day just before patient discharge. Postoperatively, all palpable axillary collections were aspirated on each follow-up visit. The volume aspirated, the number of aspirations, the time to seroma resolution, and all complications were recorded. The mean number of aspirations in the DG was significantly lower than the NDG (2.2 +/- 2.2 versus 3.3 +/- 2.1; p less than or equal to 0.002). Mean volume aspirated in the DG (146.3 +/- 181.1 mL) was less than the NDG (266.1 +/- 247.6 mL; p less than or equal to 0.003), and the time to seroma resolution was decreased in the DG as compared with the NDG (11.5 +/- 10 days versus 18 +/- 10.1 days; p less than or equal to 0.0002). Closed suction drainage after lumpectomy and axillary node dissection is advantageous in decreasing the incidence and degree of seroma formation and need not delay early hospital discharge.

Aged

Reactivity of monoclonal antibodies 17.13 and 63.12 with 141 oral mucosal lesions.

We studied the reactivity of monoclonal antibodies (MAbs) 17.13 and 63.12 with normal and diseased human oral mucosa by means of the immunoperoxidase technique. The specimens included: 22 normal oral tissues, 20 benign tumors, 17 lichen planus, 23 focal keratosis and epithelial hyperplasias, 18 proliferative verrucous leukoplakias, 20 dysplasias, and 21 squamous cell carcinomas. In most cases of normal mucosa and benign lesions, MAb 17.13 stained basal epithelial cells only, whereas MAb 63.12 stained all cell layers above the basal cells. In the premalignant and malignant lesions MAb 17.13 stained above the basal cells and MAb 63.12 either stained areas not stained by MAb 17.13 or the staining was absent. Based on the different staining patterns observed, there appears to be a potential value of these new reagents in diagnostic histopathology regarding specimens with equivocal cellular morphology.

Antibodies, Monoclonal

Treatment of large juvenile nasopharyngeal angiofibroma.

The management of large juvenile nasopharyngeal angiofibromas with intracranial extension is controversial. We review our experience since 1980 with eighteen patients with juvenile nasopharyngeal angiofibroma. A diagnostic and treatment approach consisting of preoperative magnetic resonance imaging, embolization of feeding branches from the external carotid artery, and attempted complete resection was used in seven patients with intracranial disease since 1987. Serial magnetic resonance images were used for followup. Intracranial disease that was persistent or recurrent and demonstrated subsequent growth was irradiated (35 to 45 cGy). Extracranial tumor recurrences were reexcised. We advocate this approach as a safe and effective alternative to primary irradiation and its sequelae.

Adolescent

The transsphenoethmoid approach to the sphenoid sinus and clivus.

Surgical access to the sphenoid sinus and clivus for the resection of benign and malignant disease is difficult and is often associated with significant morbidity. The transsphenoethmoid approach, an extension of a familiar otolaryngological procedure, with or without a limited medial maxillectomy, allows access to this region with little morbidity and excellent cosmetic results. Since 1988, the transsphenoethmoid approach has been used in 15 patients at our institution for resection of primary and recurrent chordomas, chondrosarcomas, pituitary macroadenomas, repair of cerebrospinal fluid leaks, and drainage of petroclival cysts. In most instances, an ipsilateral approach is most satisfactory. When necessary, a contralateral transsphenoethmoid approach is used when the tumor is posterolateral to the internal carotid artery and as far lateral as the abducens nerve.

Adenoma

Palpable abnormalities of the breast not requiring excisional biopsy.

The evaluation of a patient with a palpable abnormality of the breast typically includes physical examination, mammography and fine needle aspiration biopsy (FNAB) with cytologic interpretation of the aspirate. If the findings of these three diagnostic modalities are negative for malignancy, the current standard of care is to proceed to surgical biopsy to confirm the benign nature of the lesion. The current study was done to identify a subset of patients who could be safely observed without surgical (histologic) biopsy. These patients fulfilled specified criteria on physical examination, mammogram and needle sensation when the FNAB needle entered the lesion. Results of the cytologic studies of the FNAB were used as a corroborative rather than as a diagnostic test. Of 305 patients with mammary abnormalities, 106 were identified with "subsuspicious" lesions. Seven of the latter patients underwent surgical biopsy, four because the results of cytologic studies of FNAB revealed cytologic atypia. One of the four patients had infiltrating ductal carcinoma. All other patients have had follow-up evaluation for a mean of 61 months (range of 43 to 74 months). No carcinomas have developed at the subsuspicious site. The current study is the first to clearly define a subset of patients with palpable abnormalities of the breast who do not require surgical biopsy.

Adult

Enlargement of cerebral third ventricle in psychotic patients with delayed response to neuroleptics.

Enlargement of the cerebral third ventricle appears to be a replicable finding in groups of patients with psychotic illnesses, and there is evidence for an association of third ventricle enlargement with poorer response to treatment. Third ventricle area and width were measured from computed tomography (CT) scans in 24 mood-incongruent psychotic patients and 14 controls age and gender matched to schizophrenic patients. Patients were treated with a fixed dose of haloperidol and classified as rapid responders (55% symptom reduction on New Haven Schizophrenic Index (NHSI) within 4.5 +/- 1.3 days) or delayed responders (55% symptom reduction on NHSI within 18.6 +/- 10.5 days). The significant enlargement of third ventricle area was isolated among the 12 delayed neuroleptic responders (19.3 +/- 9.0 mm2) compared with the 14 controls (11.7 +/- 4.8 mm2, p = 0.01), and 12 other mood-incongruent psychotics. Third ventricle width also showed a trend towards larger width in the delayed responders. There was a clear positive correlation between ventricular size and patient's age exclusively in the delayed responders (r = 0.78); a comparable relationship between ventricular size and age was not present in controls, or in the other psychotics. This finding is consistent with an age-related progressive degenerative process in the central nervous system (CNS) isolated to the neuroleptic-delayed responsive psychotics.

Adult

Psychiatrists' beliefs about gender-appropriate behavior.

Psychiatrists' beliefs regarding gender-appropriate behavior may influence their treatment of patients. Psychiatrists of both sexes (men: N = 76; women: N = 57) were asked to characterize optimal mental health for hypothetical female and male patients on the Bem Sex Role Inventory. The subjects' ratings for men and women were similar with two exceptions: more of the female psychiatrists rated masculine traits as optimal for female patients, and more male psychiatrists chose traits characteristic of Bem's undifferentiated category (low levels of both masculine and feminine traits) as optimal for both male and female patients. The results indicate significant changes in psychiatrists' attitudes toward gender in the past 20 years.

Adult

Malignant carotid artery invasion: sonographic detection.

To assess the reliability of sonography in the detection of absence of invasion of the carotid artery by tumor, high-resolution ultrasound, surgical, and pathologic findings were prospectively evaluated in 24 patients with disease metastatic to the neck. Sonography performed with 5- and 10-MHz transducers had a sensitivity of 100% for the demonstration of absence of carotid invasion. Stringent criteria were used to eliminate false-negative studies. There were only five false-positive studies, for a positive predictive rate of 44.4%. Specific criteria for diagnosis of carotid invasion included visualization of an obvious break in the carotid wall with an offset in two planes and sonographic demonstration of gross tumor within the lumen. False-positive interpretations are more likely if there is inability to image the vessel at a perpendicular interface, if the abnormality cannot be seen in two planes, or if the neoplastic mass adjacent to the carotid considerably attenuates the acoustic beam.

Adult

Ewing's sarcoma of the mandible.

Cure rates of Ewing's sarcoma have improved from 10% to 75% with the use of a combination of local therapy and aggressive multi-drug chemotherapy, to decrease both the incidence of local disease recurrence and the development of pulmonary and skeletal metastases. In Ewing's sarcoma of the mandible, complete surgical resection is preferred to irradiation for local control in those instances when surgery can be performed with minimal loss of function and disfigurement.

Biopsy

The risk for otolaryngologists who treat patients with AIDS and AIDS virus infection: report of an in-process study.

The risk of contracting acquired immune deficiency syndrome (AIDS) is a concern to otolaryngologists and other health care workers. Failure to appreciate this valid concern is dangerous, but overestimating it may be equally injurious to the delivery of good patient care. We review the data on antibody titers and recovery of cultured virus in blood, saliva, middle ear fluid, cerumen, tears, and nasal mucous. We also report the initial findings of a prospective study of otolaryngologists at the San Francisco General Hospital. It appears that the risk of transmission of AIDS is low and can be minimized by sound infection control measures similar to those for hepatitis B.

Acquired Immunodeficiency Syndrome

A monoclonal antibody to squamous cell carcinoma.

Monoclonal antibody 17.13.Cl.10 is a murine IgM kappa monoclonal antibody (Mab) that stains frozen section squamous cell carcinoma (SCC) homogeneously and intensely with a sensitivity greater than 98%, including 106/107 SCC specimens from the head and neck. It was produced using a human laryngeal SCC as immunogen and screened using frozen section human tissue. Monoclonal antibody 17.13.Cl.10 faintly stains the basal layer of normal squamous epithelium, does not stain normal organ tissue other than myoepithelial cells, and reacts with few non-SCC tumors. It, therefore, may be a useful adjunct to standard histopathologic criteria for the diagnosis of SCC. It may prove helpful in the investigation of tumor-associated antigens. Despite major technical and immunologic problems, monoclonal antibodies to functional tissue-specific tumor-associated antigens have the potential to play a major role in imaging and in treatment in the future.

Animals

Hodgkin's disease and tonsillectomy.

We have reviewed the evidence associating tonsillectomy and Hodgkin's disease. Hodgkin's disease and tonsillectomy may share certain epidemiologic features, such as higher socioeconomic status. Does tonsillectomy lead to Hodgkin's disease? There is no evidence for this, nor is there any plausible reason to suspect it on the basis of the experimental evidence to date.

Hodgkin Disease

Surgical approach to the pterygomaxillary region.

It is often difficult to treat tumors of the pterygomaxillary region because of limited surgical access and nearby critical vascular and neurologic structures. An inferolateral approach, individualized to meet the specific needs of each case, is often ideal for providing adequate access. In previously untreated cases and with smaller lesions, mandibulotomy often is not necessary. Mandibulotomy, when necessary, provides the best visualization of this area and can be accomplished with minimal morbidity. Three illustrative examples are discussed.

Adult

Chemotherapy for salivary gland cancer.

Because of the scarcity of such lesions, little is known about the efficacy of chemotherapy for advanced salivary gland cancers. Although surgery and irradiation are the mainstays of treatment, patients with recurrent tumors and those with unresectable or metastatic cancer are not candidates for this usual approach. Ten patients with recurrent, metastatic, or unresectable salivary gland tumors were treated with combination chemotherapy, primarily with cisplatin, doxorubicin hydrochloride (Adriamycin), and cyclophosphamide, or cisplatin with 5-fluorouracil. In patients whose tumors exhibited no response, second-line drugs were used. The overall response rate was 50%--with one complete response--but the duration of response was short. This report contributes to the growing data base that demonstrates definite chemosensitivity of these tumors. To date, 116 patients have been reviewed. Adenocarcinoma-like cancers respond best to cisplatin, doxorubicin hydrochloride, and 5-fluorouracil. High-grade mucoepidermoid carcinoma may show a sensitivity similar to that of squamous cell carcinoma. Multi-institutional protocols need to be developed to assess the roles of adjuvant and palliative chemotherapy in the treatment of salivary gland cancer.

Adenocarcinoma