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Tsutomu Yasumitsu

Publications and source records attributed to Tsutomu Yasumitsu.

10 recordsLinked to original sources
PubMed2005

Phase II trial of postoperative adjuvant cisplatin and etoposide in patients with completely resected stage I-IIIa small cell lung cancer: the Japan Clinical Oncology Lung Cancer Study Group Trial (JCOG9101).

OBJECTIVE: Indications for surgical intervention for very limited small cell lung cancer have not yet been determined. The objective of this study is to determine whether resection followed by cisplatin and etoposide is feasible. METHODS: From September 1991 through December 1996, 62 patients with completely resected small cell lung cancer who were less than 76 years of age from 17 centers were entered in the trial. Of 62 patients, 61 were eligible, with a median follow-up of 65 months. Chemotherapy consisted of 4 cycles of cisplatin (100 mg/m 2 , day 1) and etoposide (100 mg/m 2 , days 1-3). There were 49 (80%) male patients, 44 with clinical stage I disease, 10 with stage II disease, and 6 with stage IIIa disease. RESULTS: Forty-two (69%) patients received 4 cycles of cisplatin and etoposide. No treatment-associated mortality was noted. Median survival time was not reached in patients with pathologic stage I disease, was 449 days in patients with stage II disease, and was 712 days in patients with stage IIIa disease. Three-year survival was 61% overall, 68% in patients with clinical stage I disease, 56% in patients with stage II disease, and 13% in patients with stage IIIa disease ( P = .02). Recurrence was noted in 26 (43%) patients overall. Local failure was noted in 6 (10%) patients. Locoregional recurrence tends to be found more frequently in patients with stage IIIA disease. Distant failure was found in 21 (34%) patients overall. Brain metastasis was found in 15% of the patients. CONCLUSION: Major lung resection followed by postoperative cisplatin and etoposide is feasible, with a favorable survival profile. Because nodal metastasis appears to be a major prognostic factor, preoperative evaluation of nodal status remains a major concern.

Adult↗
PubMed2004

Benefits of surgery for patients with pulmonary metastases from colorectal carcinoma.

BACKGROUND: A pulmonary metastasectomy for colorectal carcinoma is a generally accepted procedure, although several prognostic predictors have been reported. The aim of this study is to define the patients who benefit from pulmonary metastasectomy for colorectal carcinoma. METHODS: Retrospective survival analysis was performed using 128 patients who underwent curative pulmonary resection. RESULTS: The overall 5-year survival rate was 45.3%. Univariate analysis showed the number of metastases, location (unilateral or bilateral), prethoracotomy carcinoembryonic antigen (CEA) level, hilar or mediastinal lymph-node metastasis, and Dukes' stage to be considerable prognostic factors. Among these, Dukes' A for the primary lesion and unilateral pulmonary metastasis were shown to be independent predictors of longer survival by multivariate analysis (p = 0.0093 and p = 0.0182, respectively). In patients treated with both pulmonary and hepatic metastastasectomies, a better prognosis was observed in those who received metachronous resection. Recurrence after a pulmonary metastasectomy frequently occurred in the thorax and the 3-year survival rate was 44.6% in patients who underwent a repeat thoracotomy. CONCLUSIONS: Patients with unilateral metastasis and Dukes' A for the primary tumor benefit most from the resection of pulmonary metastasis from colorectal carcinoma. Further, the number of metastases, prethoracotomy CEA level, and hilar or mediastinal lymph-node involvement should be considered to determine the operative indication. Finally, periodic follow-up examinations for thoracic recurrence should be carefully performed as these patients may have a heightened risk of requiring a repeat thoracotomy.

Adenocarcinoma↗
PubMed2004

[Acute mediastinitis].

Causes, diagnosis, treatment and mortality about acute mediastinitis were described. Two cases of our experience were demonstrated with chest X-ray, computed tomography (CT) and operative findings. Prevention, recognition, prompt diagnosis and early treatment of the disease were emphasized.

Acute Disease↗
PubMed2003

Clinicopathological investigation of 20 cases of primary tracheal cancer.

OBJECTIVE: Primary tracheal cancer is considered to be relatively rare. Its epidemiology, therapeutic strategy and prognosis are not well understood. METHODS: We retrospectively investigated the clinicopathological aspects of 20 patients with primary tracheal cancer. RESULTS: Patients included 11 men and nine women with a mean age of 57.3 years. There were 12 squamous cell carcinomas and eight adenoid cystic carcinomas. Four patients received only palliative therapy. Sixteen patients underwent surgical treatment such as segmental tracheal, laryngotracheal, or carinal resection. One patient with squamous cell carcinoma died of postoperative mediastinitis. Although resected specimens from five patients had tumor positive margins, only one of those patients died after local recurrence and only three patients had postoperative treatment. The 5-year survival rate for patients who underwent surgery was 72.3%. CONCLUSIONS: Surgical treatment is the first choice therapeutic modality for primary tracheal cancer in consideration of its prognosis. While performing the operation, safety of the anastomosis should take precedence over completeness of resection.

Adult↗
PubMed2002

Video-assisted thoracoscopic bullectomy for spontaneous pneumothorax in a Swyer-James syndrome patient.

We treated a 15-year-old patient with spontaneous pneumothorax associated with Swyer-James syndrome using video-assisted thoracoscopic surgery (VATS). Thoracic computed tomography showed hyperlucent areas in the bilateral lungs. Due to major air leakage continuing for a week, we conducted VATS bullectomy. Because the opposite lung suffered hypoplasia, intermittent bilateral pulmonary ventilation was required to sustain an adequate PaO2 in arterial blood gas analysis during surgery. Because of recurrent pneumothorax, we performed reoperation 10 months later, finding a few newly generated bullae. To the best of our knowledge, this is the first report of VATS used to treat a Swyer-James syndrome patient with pneumothorax.

Adolescent↗
PubMed2002

Steroid therapy without primary dose escalation for postthymectomy crisis in 2 thymomatous myasthenia gravis patients.

We report 2 cases of thymomatous myasthenia gravis associated with postoperative crisis and medicated with steroid therapy using prednisolone without primary dose escalation. Two women, a 38 years old and the other 64 years old, underwent extended thymectomy under the diagnosis of myasthenia gravis associated with invasive thymoma. Bulbar symptoms in both were severe despite preoperative anticholinesterase medication. Myasthenic crises with an antiacetylcholine receptor antibody (anti-AchR Ab) elevation were encountered in the postoperative clinical course. Daily administrations of a large amount of prednisolone without primary dose escalation and the subsequent tapering therapy effectively improved myasthenic symptoms and decreased their anti-AchR Ab titer. We also discuss difficulties in treatment in these cases.

Adult↗
PubMed2002

Oncological significance of WHO histological thymoma classification. A clinical study based on 286 patients.

OBJECTIVES: The clinical significance of thymoma histology remains controversial because of the numerous histological classifications of thymic epithelial tumors. Universal classification of such tumors was achieved by the World Health Organization (WHO) in 1999. We studied the prognostic significance of this classification. METHODS: We studied clinical features and postoperative survival in cases of thymoma, but not thymic carcinoma, based on WHO histological classification in 286 patients undergoing surgery between 1958 and 2001. RESULTS: Tumors were 19 type A, 79 type AB, 59 type B1, 102 type B2, and 27 type B3. The proportion of invasive tumors increased by type--from A to AB, B1, B2, and B3. The great vessels were involved more frequently in type B2 and B3 tumors than in type A, AB, and B1 tumors. The 20-year survival was 100% in type A, 87% in type AB, 91% in type B1, 65% in type B2, and 38% in type B3 tumors. Multivariate analysis showed Masaoka staging and WHO histological classification to be significant independent prognostic factors, while age, gender, myasthenia gravis association, resection completeness and great vessel involvement were not. In stage III patients, 13 of 45 patients with type B2 and B3 tumor died of their tumors, while no tumor deaths occurred in 11 patients with type A, AB, and B1 tumors. CONCLUSION: WHO histological classification realistically reflects the oncological behavior of thymoma.

Adolescent↗
PubMed2002

A prematurely terminated phase III trial of intraoperative intrapleural hypotonic cisplatin treatment in patients with resected non-small cell lung cancer with positive pleural lavage cytology: the incidence of carcinomatous pleuritis after surgical intervention.

BACKGROUND: The prognosis of patients with resected non-small cell lung cancer without carcinomatous pleuritis whose intrapleural cancer cells were detected by means of a cytologic examination of pleural lavage fluid obtained immediately after a thoracotomy has been reported to be poor. METHODS: The Japan Clinical Oncology Group conducted a phase III trial for a 3-year period starting from October 1994 to determine whether intraoperative intrapleural hypotonic cisplatin treatment could effectively control pleural disease and thereby prolong the survival of these patients. The patients were randomized to receive either intraoperative intrapleural hypotonic cisplatin treatment or no treatment before closure of the open thorax. The intraoperative intrapleural hypotonic cisplatin treatment consisted of exposing the entire thorax to cisplatin (50 microg/mL) in distilled water for 15 minutes. RESULTS: Because of the slow registration pace, the study was prematurely terminated in January 1998. During the 41-month period from the start of the registration, 49 patients were entered into the study, and all were eligible. Twenty-five and 24 patients were randomly assigned to the treatment and control groups, respectively. No statistically significant difference in the overall survival and disease-free survival between the 2 groups was observed. However, the appearance of carcinomatous pleuritis was suppressed by the hypotonic cisplatin treatment (42% of the control group vs 8% of the treatment group, P =.008). CONCLUSIONS: Although the randomized trial was prematurely terminated, the intraoperative intrapleural hypotonic cisplatin treatment was found to effectively suppress the appearance of carcinomatous pleuritis in resected patients who demonstrated a positive pleural lavage cytology finding.

Aged↗
PubMed2002

[A case of multiple skin metastases from gastric cancer successfully treated with docetaxel combined with doxifluridine].

The results of treatment of gastric cancer with docetaxel have scarcely been reported. Combination chemotherapy of docetaxel and doxifluridine was administered to five patients with recurrent or unresectable gastric cancer in the authors' department, and the overall response rate was 40%. Among them, we report here a case of multiple skin metastases successfully treated with this chemotherapy. A 71-year-old man had already undergone total gastrectomy with splenectomy about one year previously because of advanced gastric cancer: type 3, tub2, se, n1, INF gamma, ly3(+), v1(+), stage IIIa. He was treated with adjuvant chemotherapy of low-dose FP (CDDP/5-FU) for two weeks, and thereafter 5-FU (200 mg/day orally) was administered. Skin metastases appeared on the right upper eyelid and the left femoral region, though no recurrent findings were detected by CT, US, and the like one year after operation. The combination chemotherapy of docetaxel and doxifluridine was administered because multiple skin tumors rapidly appeared on the back and the right upper eyelid region. These tumors disappeared after 3 weeks and he has had no recurrence more than one year after chemotherapy.

Aged↗