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Biomedical subjects

S Namikawa

Publications and source records attributed to S Namikawa.

At least 37 records · Page 2Linked to original sources
PubMed1994

Descending necrotizing mediastinitis secondary to a retropharyngeal abscess.

A rare case of descending necrotizing mediastinitis (DNM) secondary to a nontraumatic retropharyngeal abscess is reported. Even in the era of antibiotics, the mortality of DNM is still around 40%. In spite of drainage of a localized neck abscess, and the administration of systemic antibiotics, the retropharyngeal abscess extended to the pericardial and pleural cavities. Several drainage procedures and thoracotomies were performed to treat the bilateral empyemas and purulent pericarditis. The patient was discharged on hospital day 52. Computed tomography was used to follow the progression of disease, and assess the efficacy of treatment. DNM is a very aggressive form of mediastinitis. The importance of proper mediastinal drainage, as well as the systemic administration of antibiotics, must be emphasized.

Candidiasis↗
PubMed1994

Surgical treatment of primary lung cancer in patients less than 40 years of age.

PURPOSE AND METHODS: The major purpose of this study was to determine whether the survival rate in young lung cancer patients after surgical treatment differs from that in older patients. An analysis was performed for all patients with bronchogenic carcinoma who underwent surgery at Mie University Hospital from 1965 to 1990. RESULTS: Of 803 patients, 24 (2.99%) were 33 to 39 years old. At the time of surgery, the disease was diagnosed as stage I in seven patients (29%), stage II in four (17%), stage IIIa in seven (29%), stage IIIb in two (8%), and stage IV in four (17%), while 46.3% of the patients older than 40 years of age had either stage IIIa, IIIb, or IV disease. All of the 24 patients less than 40 years of age underwent thoracotomy: curative resection in 14 cases, palliative resection in sex, and probe-thoracotomy in four. The 5-year survival rate for all stages of disease was 31.4% in these 24 patients, and 41.9% in 603 patients greater than 40 years of age. The 5-year survival rate for stage I disease was 35.7% in the seven younger patients and 78.0% in the 207 older patients; for stage II, it was 25.5% in the four younger patients and 40.6% in the 98 older patients; for stage III, it was 33.3% in the nine younger patients and 15.6% in the 250 older patients; and for stage IV, it was 25% in the four younger patients and 6.6% in the 48 older patients. There were no significant differences in survival rate between the two age groups for all patients or for those with each stage of disease. CONCLUSION: Although younger patients tended to have more advanced disease, long-term survival in these patients did not differ from that of older patients.

Adult↗
PubMed1994

Surgery for T4 lung cancer: the prognoses of T4 lung cancer.

The prognoses of T4 lung cancer patients treated surgically were investigated in 76 patients. Extended resection was performed in 21 patients, palliative resection in 21 and exploratory thoracotomy in 34. Although the five-year survival of the extended resection group did not differ significantly from that obtained in the exploratory thoracotomy group, the mean survival time of the extended resection group was 3.1 months longer than that of the exploratory thoracotomy group. Two patients who had undergone resection for left atrial involvement, survived for two years or more, and a T4N0 patient with squamous cell carcinoma, in whom resection for aortic involvement was carried out, died from an unrelated disease after 15 months. Two patients with pleural dissemination, who underwent panpleuropneumonectomy, survived for two years. Surgical intervention did not improve the prognosis of patients with N2-squamous cell carcinoma, those with malignant effusion or those with multiple organ involvement.

Adenocarcinoma↗
PubMed1994

[Successful treatment of a giant bulla by thoracoscopic excision and laser ablation].

A 39-year-old male complaining of shortness of breath on mild exertion. Radiographs revealed that a giant bulla occupied more than half the area of the right lung field. Thoracoscopic excision of the giant bulla was performed using some autosutures. After the emphysematous lesion was consolidated by laser ablation, it was sutured using PDS thread. The bulla in the left lung was similarly excised 3 weeks after the first procedure. The FEV1.0% improved from 72% to 89% after excision and laser ablation of a giant bulla and bullae. Thoracoscopic excision and laser ablation of a giant bulla appears to be an effective alternative to conventional thoracotomy.

Adult↗
PubMed1992

A new instrument for pulmonary resection: the bipolar Nd-YAG laser dissector.

A bipolar Nd-YAG laser dissector was developed to quickly dissect or resect organs, and the possibility of laser pulmonary dissection without scissors and ligation threads was studied experimentally. Pulmonary tissue was completely and easily divided using a bipolar laser handpiece, and the dissected edge was perfectly sealed. Leakage of air and blood from the edge was not induced and no additional stitching was required. Histological examination of the dissected edge revealed tissue remodeling after laser irradiation. The formation of amorphous layers, including vacuoles, was peculiar to the fusion-coagulation area, and alveolar atelectasis and capillary obstructions were characteristic of the degenerative area. When tissue dissection was performed by laser vaporazation, tissue remodeling seemed to be the most important factor in the prevention of leakage. In conclusion, we can effectively and quickly resect pulmonary tissue using the bipolar Nd-YAG laser dissector without scissors and without ligation threads.

Aluminum↗
PubMed1992

[Effect of the dry distillation tar of delipidated soybean (Glyteer) on a psoriasic model in the mouse (4)].

Effect of Glyteer (GL) on edema and epidermal hyperplasia in mouse ear by 12-o-tetradecanoylphorbol-13-acetate (TPA) were investigated by its topical application; and the effects were compared with those of betamethasone 17-valerate (BV), indomethacin (IM) and cyclosporin (CS). GL significantly inhibited the edema in mouse ear at 6 hr after TPA treatment. The inhibitory activity of GL on the edema had the same potency as those of BV, IM and CS. Furthermore, GL inhibited the epidermal weight and its protein amount on the hyperplastic response in mouse ear at 3 days after TPA treatment, and the inhibitory activity of GL was also confirmed by the pathologic findings. The mode of the inhibitory action of GL was the same as those of BV and CS, but not that of IM. From those results, it is suggested that GL possesses a potent therapeutic effect for psoriasis.

Animals↗
PubMed1992

[Prophylactic use of antibiotics for fever following fiberoptic bronchoscopy and bronchography].

To evaluate the effect of bacampicillin hydrochloride on fever following fiberoptic bronchoscopy and bronchography, we conducted multi-institutional randomized study. In bronchographic examinations, the rise of body temperatures in the bacampicillin group (0.82 +/- 0.13 degrees C: mean +/- SE) was significantly smaller than that in the control group (1.39 +/- 0.25 degrees C) on the second day of examination. Bacterial infection may contribute to the rise of temperature on the day following bronchography, but no pneumonia or sepsis was observed. There was no differences in the rise of body temperature on the first, third or fourth day. In fiberoptic bronchoscopic examinations, there was no difference between the two groups. We conclude that there is no clinical indication of the value of prophylactic use of antibiotics in either fiberoptic bronchoscopy or bronchography.

Adult↗
PubMed1992

[Application and limitation of laser pulmonary resection].

A new type of laser handpiece, bipolar Nd-YAG laser dissector, was experimentally applied for laser pulmonary resection of the dogs. The lung was completely and easily divided by the use of the bipolar laser dissector without scissors. The dissected edge without cartilages was completely sealed and additional stitches by threads was not required. But massive leakage of air was obvious from the dissected bronchus. The cause of unsuccessful sealing of the bronchus was supposed to be an unequal tissue remodeling, because of a very high melting point of cartilages compared with other tissue. We conclude that the bipolar Nd-YAG laser dissector contributes segmental pulmonary resection at the level without bronchi and it should not be applied for pulmonary resection containing bronchial cartilages.

Animals↗
PubMed1991

Rupture of a benign mediastinal teratoma into the right pleural cavity.

A 27-year-old woman with a ruptured mediastinal cystic teratoma had high levels of amylase and carcinoembryonic antigen in cystic fluid. The activity of the amylase is thought to be the most likely cause of the rupture. High levels of carcinoembryonic antigen in pleural fluid are not necessarily indicative of a malignant lesion but may suggest the presence of a ruptured teratoma in patients with mediastinal tumors.

Adult↗
PubMed1991

[Surgical treatment of the so-called "galloping type" small size carcinoma of the lung].

We experienced twelve cases of non-small cell carcinoma of the lung of the so-called "galloping type" small size carcinoma (less than or equal to 2 cm). Ten cases presented with mediastinal lymph node metastasis and two cases with distant metastasis. Solitary lymph node metastasis observed in almost half of the cases and lymph node metastasis in peculiar lymphatic regions (#3 a) seen in two cases, were the prominent characteristics of the lymphatic pathway dissemination showed by this type of cancer in advanced clinical stage. The prognosis was good, with 3 years and 5 years survival rate of 72.2% and 54.1% respectively. According to these results, we consider that, if the clinical stage is favorable, the surgical treatment must be indicated in all cases of these advanced small size carcinoma of the lung.

Adult↗
PubMed1991

[DNA analysis of resected pulmonary adenocarcinoma].

The nuclear DNA content was determined by flow cytometry (FCM) in 155 resected specimens (122 paraffin-embedded and 33 fresh frozen specimens) of primary adenocarcinoma of the lung obtained at our department during the 8 years from 1982 to July, 1990. Aneuploid patterns were observed in 106 specimens (68.4%), and the diploid patterns in 49 (31.6%). No difference was observed in the age, sex, or clinical stage between the two groups. As for the relationship of the presence or absence of vascular infiltration with the DNA index (DI) and the heterogeneity index score (HIS), the percent positivity of vascular infiltration was 38.1% in the group with 1 less than or equal to DI less than 1.5 but nearly twice higher at 63.6% in the group with 1.5 less than or equal to DI. The percent positivity of vascular infiltration was 29.4% in the group with HIS less than 100 but 62.5% in the group with 100 less than or equal to HIS. Concerning the relationship between the ploidy pattern and outcome, the 5-year survival rate was 28.0% in the aneuploidy group and 65.1% in the diploid group, the outcome being significantly poorer in the first group. Concerning the relationship between DI and outcome, the 5-year survival rate was 14.9% in the group with 1.5 less than or equal to DI as compared with 55.4% in the group with 1.0 less than or equal to DI less than 1.5. DNA analysis was made also in bronchoscopic brushing specimens to examine the possibility of preoperative evaluation of the prognosis of lung cancer.(ABSTRACT TRUNCATED AT 250 WORDS)

Adenocarcinoma↗