Kim, Hee Kyoo;Ha, Seung In;Kim, Yu Ri;Park, Chan Bog;Oak, Chul Ho;Jang, Tae Won;Jung, Maan Hong;Oh, Kyung Seung;Chun, Bong Kwon;Lee, Min Ki;Park, Soon Kew
Tuberculosis and Respiratory Diseases
/
v.56
no.5
/
pp.505-513
/
2004
Background : In lung cancer patients, the presence of metastatic neck nodes is a crucial indicator of inoperabilty. So thorough physical examination of neck is always mandatory, but sometimes those are hardly palpable even by the skillful hand. Ultrasonography is a useful diagnostic method in detection of small impalpable lymph nodes and in guidance of fine needle aspiration biopsy. In this study we evaluated the clinical usefulness of ultrasonography(USG) and ultrasound-guided fine needle aspiration cytology(US-FNA) in lung cancer patients without palpable neck nodes. Methods and Materials : From Sep 2002 to Sep 2003, 36 non-small cell lung cancer patients (20 adenocarcinoma, 16 squamous cell cancer) and 10 small cell lung cancer patients without palpable neck nodes on physical examiation were enrolled. patients who had contralateral mediastinal nodal enlargement(>1cm) on chest CT were excluded. After the routine check of USG on the neck, US-FNA was done in cases with enlarged neck nodes (${\geq}5mm$ in the short axis). The presence of enlarged lymph node on USG, and of malignant cells on cytology were evaluated by the histological type and the patients' clinical stage of lung cancer. Results : Among 36 non-small lung cell cancer patients, 14 (38.8%) had enlarged neck nodes on USG, and 5 of 10 small cell lung carcinoma patients. The mean diameter of the neck nodes was 9.8 mm (range, 7-12 mm). US-FNA of 14 non-small cell lung cancer patients revealed tumor cells in eight patients (57.1%). In 5 small cell lung cancer pateints, tumor cells were found in all cases. By the result of US-FNA, the clinical stage of 8 out of 36 (22.2%) non-small cell lung cancer patients had changed, including two cases of shift from the operable IIIa to the inoperable IIIb. In small cell lung cancer patients their clinical stage was not changed after US-FNA, but their pathological diagnosis was easily done in two cases, in whom endobronchial lesions were not found on bronchoscopy. Conclusions : USG and US-FNA of neck node seem to be safe, sensitive and cost-effective diagnostic tools in the evaluation of lung cancer patients without palpable neck nodes.
Purpose: This study was performed to examine the neck failure patterns after a complete response (CR) to definitive radiotherapy for advanced head and neck cancer patients, as well as evaluate the clinical significance of the results of this study. Materials and Methods: Between 1987 and 2008, the clinical data of patients who had been treated with radical radiotherapy for primary squamous cell carcinomas and enlarged cervical lymph nodes was analyzed retrospectively. Ultimately, the cases that showed CR of the cervical lymph node lesions to full-dose radiotherapy were included in this study. The recurrent rate and sites in the cervical lymphatic area were evaluated periodically by radiologic imaging studies, along with some factors which might have affected the rate of recurrence. Results: A total of 73 patients who achieved CR in neck area after radiotherapy were included in this study. The rate of subsequent neck failure among those patients was 19.2%. There was only a 5.5% failure rate in the 55 patients who underwent radiotherapy in their primary site. Eighty percent of the recurrent cases were found within 3 years (median follow-up, 68 months). The majority of neck recurrent cases (47%) were accompanied with the failure of the primary lesions. The initial response of the primary site and the method of radiotherapy simulation were significant prognostic factors associated with the nodal recurrence rate. Conclusion: The recurrence rate of cervical nodes in patients with CR to radiotherapy in the primary site and neck area was about 5%. These patients could be followed up with close observation without a planned neck dissection.
Park Woo Yoon;Yoo Seong Yul;Koh Kyoung Hwan;Cho Chul Koo;Park Young Hwan;Shim Youn Sang;Oh Kyung Kyoon;Lee Yong Sik
Radiation Oncology Journal
/
v.8
no.2
/
pp.207-212
/
1990
To determine the correlation between the response to induction chemotherapy and subsequent radiotherapy we analyzed the clinical records of 60 patients with locally advanced carcinoma of the head and neck retrospectively who had completed a full course ($2\~3$ cycle) of induction chemotherapy and curative radiotherapy in Korea Cancer Center Hospital between 1986 and 1989. Chemotherapy was administeredd with CDDP+Bleomycin (BP) in 20, CDDP+5-FU (FP) in 37, and hybrid of BP and FP in three patients. Radiotherapy was giver conventionally with a dose of 65 to 75 Gy or more over seven to eight weeks according to the size of lesion. Response rates following induction chemotherapy were $80\%$ for the tumors and $879\%$ for the nodes whereas complete reponse rates were $12\%\;and\;13\%$, respectively. Six months after radiotherapy $67\%$ of the tumors and $77\%$ of the nodes achieved a complete response. Among the 48 tumor responders and the 31 nodal responders to chemotherapy,39 ($81\%$) and 28 ($90\%$), respectively, achieved complete response after radiotherapy. Thus, whether or not the tumor and node respond to induction chemotherapy was predictive of the response to subsequent radiotherapy (p<0.0005 in tumor, p<0.0001 in node). By reanalyzing according to disease subsets (i.e. primary site, T-stage, N-stage) this relationship was not observed at T1-T2 disease (p>0.3). Therefore the tumor or node's response to induction chemotherapy is a predictor for subsequent radiotherapy except in T1-T2 tumors, and complete response to radiotherapy can be expected despite the failure of induction chemotherapy in $T_1-T_2$ tumors.
Non-small cell lung cancer (NSCLC) with invasion of mediastinal structures is classified as stage IIIB, and has been considered surgically unresectable However, in a selected group of these patients, better results after surgical resection compared to non-surgical group have been reported. The aim of this study is to evaluate the role of surgical resection in treatment of mediastinal T4 NSCLC. Material and Method: Among 1067 patients who underwent surgical intervention for non-small cell lung cancer from Aug 1987 to Dec 2001 in Korea cancer center hospital, 82 patients had an invasion of T4 mediastinal structures (7.7%). Resection was possible in 63patients (63/82 resectability 76.8%). Their medical records in Data Base were reviewed, and they were followed up completely until Jun 2002. Surgical results and prognostic factors of NSCLC invading mediastinal structures were evaluated retrospectively. Result Lung cancer was resected completely in 52 patients (63.4%, 52/82). Lung resection was lobectomy (or more) in 14, pneumonectomy in 49. The mediastinal structures invaded by primary tumor were great vessel (61.9%), heart (19%), vagus nerve (9.5%), esophagus (7.9%), and vertebral body (7.9%). Nodal status was N0 in 11, N1 in 24, and N2 in 28 (44.4%). Neoadjuvant therapy was done in 6 (9.5%, 5 chemotherapy, 1 radiotherapy), and adjuvant therapy was added in 44 (69.8%, 15 chemotherapy, 29 radiotherapy) in resection group (n=63). Complication was occurred in 23 (31.7%), and operative mortality was 9.5% in resection group. Median and 5 year overall survival including operative mortality was 18.1 months and 21.7% in resection group (n=63), 6.2months and 0% in exploration only group (n=19, p=.001), 39 months and 32.9% in N2 (-) resection group (n=35), and 8.8 months and 8.6% in N2 (+) resection group (n=28, p=.007). The difference of overall survival by mediastinal structure was not significant. Conclusion: The operative risk of NSCLC invading mediastinal structures was high but acceptable, and long-term result of resection was favorable in selected group. Aggressive resection is recommended in well selected pateints with good performace and especially N2 (-) NSCLC with mediastinal invasion.
Hwang Ho Kyoung;Hyung Woo Jin;Choi Seung Ho;Noh Sung Hoon
Journal of Gastric Cancer
/
v.4
no.4
/
pp.272-276
/
2004
Purpose: The incidence of nodal metastases is as low as 2 to $20\%$ in early gastric cancer, so there is a trend to lessen the extent of surgery. In addition, the adequate range for a lymphadenectomy is controversial, especially in early gastric cancer. In this study, we tried to find the minimal range for a lymphadenectomy by analyzing sentinel-node and solitary lymph-node metastases in gastric cancer. Materials and Methods: The total of 78 patients who underwent a curative gastrectomy with a D2 lymphadenectomy for early gastric cancer between 2000 and 2002 in the Department of Surgery, Yonsei University, Seoul, Korea, were included for the evaluation of sentinel-node metastases.. After a laparotomy, 25 mg of indocyanine green was mixed in 5 ml of normal saline, and all the dye was injected into the subserosal layer around the primary tumor. All nodes stained within 5 minutes were marked. In addition, a total of 141 patients, who underwent a curative gastrectomy between 1997 and 2001 at the Department of Surgery, Yonsei University, Seoul, Korea, were analyzed for solitary lymph- node metastases. Results: Among the 78 patients, sentinel nodes were detected in 69 patients ($88.5\%$). The sentinel nodes in 60 cases ($87.0\%$) were located in the perigastric area. However, 9 cases ($13.0\%$) had sentinel nodes in the N2 group. In the 141 cases that had a solitary metastatic node, 125 cases ($88.6\%$) demonstrated the metastatic lymph node in the perigastric area, and 16 cases ($11.4\%$) showed that the metastatic node in the N2 group. Conclusion: Taken together, removal of a perigastric lymph node could miss early metastases in gastric cancer, so a D1 lymphadenectomy should not be the minimal range of dissection if a lymphadenectomy is necessary. (J Korean Gastric Cancer Assoc 2004;4:272-276)
Park, Shin-Young;Bae, Jung-Min;Kim, Se-Won;Kim, Sang-Woon;Song, Sun-Kyo
Journal of Gastric Cancer
/
v.9
no.3
/
pp.110-116
/
2009
Purpose: The aim of this study was to examine the usefulness of positron emission tomography (PET)-computed tomography (CT) in the pre-operative staging of gastric cancer. Materials and Methods: Between February 2006 and August 2008, PET-CT and CT were performed on 70 patients diagnosed with gastric cancer by gastrofiberscopic biopsy. The sensitivities, specificities, Positive predictive value (PPV), and negative predictive value (NPV) of PET-CT and CT imaging for the detection of gastric cancer TNM staging were compared. Results: The detection rates for the primary tumor were as follows: PET-CT, 81.4% (57/70); and CT, 42.9% (30/70). For both early gastric cancer (EGC) and advanced gastric cancer (AGC), PET-CT was more accurate than CT in detecting the lesions. As the size of the tumor exceeded 3 cm, the detection rate increased. The sensitivities, specificities, PPV, and NPV of PET-CT for lymph node staging were 55.6%, 81%, 86.2%, and 45.9%, while the sensitivities, specificities, PPV, and NPV of CT were 40.0%, 85.7%, 85.7% and 40%, respectively. One case of multiple liver metastasis and two cases of dual primary cancer (rectal and pancreatic cancers) were detected by PET-CT. PET-CT also had a higher detection rate for all histologic types of primary tumors. PET-CT was more accurate than CT in detecting primary gastric cancer lesions. The detection of nodal metastasis by PET-CT was similar to CT; small-sized tumors or EGC detection rates were not high. However, PET-CT provided additional information to detect distant metastases and dual primary cancers and reduced unnecessary laparotomies to detect peritoneal seeding or carcinomatosis. Conclusion: It would be useful to make a pre-operative diagnosis of gastric cancer and determine treatment if PET-CT were added to other routine pre-operative studies.
Moon, Heung Kyu;Youn, Yang;Son, Sung Ho;Lee, Suk Koo;Yi, Jae Sun
Journal of Korean Society of Forest Science
/
v.82
no.1
/
pp.26-33
/
1993
In vitro shoot proliferation and rooting were tested for 2-0 seedlings of half-sib families of 4 plus oaks trees. Nodal segments having axillary buds from 37 families(16 of Quercus acutissima, 10 of Q. variabilis, 7 of Q. serrata, and 4 of Q. mongolica) were cultured on WPM(Woody Plant Medium) supplemented with 0.5 mg/l BA (6-benzyladenine) and 0.01 mg/l NAA(${\alpha}$-naphthalene acetic acid) and subcultured at 2-3 weeks of intervals fur 6 months. In vitro rooting was carried out on GD(Gresshoff and Doy) medium supplemented with 0.5mg/l IBA(indole butyric acid). The capacity for shoot proliferation and rooting was highly varied with families. Generally, white oaks(Q. serrata and Q. mongolica) showed poor response than black oaks(Q. acutissima and Q, variabilis) in shoot proliferation and rooting. Among the total of 37 families, 7 of Q. acutissima, each 2 of Q. variabilis, Q. serrata, and Q. mongolica revealed abilities for continuous shoot proliferation, and the others failed to proliferate. Rooting of the selected oak trees also greatly varied among the families. In Q. acutissima, rooting ratio ranged from 10.0%(CB 25. KG 4) to 89.8%(CB 18). Although 26.7% of KG 16 in Q. variabilis, 3.3% of JN 15 in Q. serrata were rooted, Q. mongolica was not rooted at all in this experimental conditions. No relationship between shoot growth and the rooting ability was observed. Present results suggest the possibility of large-scale micropropagation, but further studies on family differences, shoot-tip necrosis, and callusing of rooting junction are still required to develop reliable micropropagation systems.
Kim, Taeg-Hyun;Song, Kyo-Young;Kim, Seung-Nam;Park, Cho-Hyun
Journal of Gastric Cancer
/
v.6
no.2
/
pp.97-102
/
2006
Purpose: The prognosis for patients with a Borrmann type IV gastric cancer is extremely poor despite an aggressive surgical approach. We evaluated the clinicopathological features for Borrmann type IV cancers to find treatment strategy. Materials and Methods: The 1098 patients with advanced gastric cancer who underwent surgical resection between 1990 and 2001 were analyzed. These patients were divided into two groups: 81 patients with a Borrmann type IV carcinoma, and 1017 patients with all other types of gastric carcinomas. Results: Patients with a Borrmann type IV carcinoma were younger than those with other types, and female was prevalent (p=0.000). Of the patients with a Borrmann type IV gastric carcinoma, 68 patients (84%) were classified as stage III or IV at the initial diagnosis. The histologic type was commonly undifferentiated and serosal infiltration; nodal involvement and lymphatic invasion were more frequent in patients with a Borrmann type IV than in those with other types of cancer. Multivariate analysis confirmed that the extent of lymph node metastasis was a negative prognostic factor for Borrmann type IV gastric carcinomas. The curability for a Borrmann type IV carcinoma was only 53.1%, and peritoneal dissemination rate was 25.9%. The predominant pattern of recurrence for a Borrmann type IV gastric carcinoma was peritoneal dissemination, and it was significantly different with other types (93.1% vs 55.8%, P<0.05). The 5-year survival rate of patients with a Borrmann type IV gastric carcinoma was significantly lower than those of patients with other types of cancer, even though a curative resection had been accomplished (26% vs 63%, p<0.005). The 5-year survival rates of patients with a Borrmann type IV carcinoma following a curative resection were 44.9%, 24%, and 0% for stages II, III and IV, respectively (p<0.05). Conclusion: Because the prognosis for patients of a Borrmann type IV gastric cancer is extremely poor despite a curative resection, preoperative and/or intraperitoneal chemotherapy should be considered. And diagnostic laparoscopy and peritoneal cytology may be used to play an important role in accurate staging workup. (J Korean Gastric Cancer Assoc 2006;6:97-102)
Background: Correct preoperative staging of esophageal cancer is a prerequisite for adequate treatment. We prospectively compared the accuracy of positron emission tomography (PET) with [fluorine-18]FDG in the staging of esophageal cancer to that of computed tomography (CT). Material and Method: The findings of FDG PET and of chest CT including lower neck and the upper abdomen of 20 biopsy-proven squamous cell carcinoma patients (male, 19; female, 1; mean age, 61) were compared with the pathologic findings obtained from a curative esophagectomy with lymph node dissection. Result: The sensitivities of FDG PET and CT for diagnosis of primary tumor were the same, 90.0% (18/20). Both FDG PET and CT failed to show the primary tumor in 2 of 20 patients; one had a 1cm sized carcinoma in situ and the other had T1 stage cancer. By using the results of the pathologic examinations of 193 removed lymph node groups, we calculated the diagnostic sensitivities, specificities and accuracies of PET and CT (*$\chi$2 p < 0.005). Sensitivity** Specificity Accuracy* PET 55.6%(30/54) 97.1%(135/139) 85.5%(165/193) CT 13.0%(7/54) 98.6%(137/139) 74.6%(144/193) One of four patients with a false-positive for PEThad had active pulmonary tuberculosis. Among the 24 tumor involved lymph node groups, PET failed to show tumor metastasis in 5 lymph node groups abutting the tumor and in 14 lymph node groups located where the decay correction was not performed. Conclusion: Based on the above findings, it is suggested that [F-18]FDG-PET is superior to CT in the detection of nodal metastases and in the staging of patients with esophageal cancer.
Purpose: Accurate evaluation of cervical lymph node (LN) metastasis of head and neck squamous cell canter (SCC) is important to treatment planning. We evaluated the diagnostic accuracy of F-18 fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) for the detection of cervical LN metastasis of head and neck SCC and performed a retrospective comparison with CT/MRI findings. Materials & Methods: Seventeen patients with pathologically proven head and neck SCC underwent F-18 FDG PET/CT and CT/MRI within 4 week before surgery. We recorded lymph node metastases according to the neck level system of imaging-based nodal classification. F-18 FDG PET/CT images were analyzed visually for assessment of regional tracer uptake in LN. We analyzed the differences in sensitivity and specificity between F-18 FDG PET/CT and CT/MRI using the Chi-square test. Results: Among the 17 patients, a total of 123 LN levels were dissected, 29 of which showed metastatic involvement. The sensitivity and specificity of F-18 FDG PET/CT for detecting cervical LN metastasis on a level-by-level basis were 69% (20/29) and 99% (93/94). The sensitivity and specificity of CT/MRI were 62% (18/29) and 96% (90/94). There was no significant difference in diagnostic accuracy between F-18 FDG PET/CT and CT/MRI. Interestingly, F-18 FDG PET/CT detected double primary tumor (hepatocellular carcinoma) and rib metastasis, respectively. Conclusion: There was not statistically significant difference of diagnostic accuracy between F-18 FDG PET/CT and CT/MRI for the detection of cervical LN metastasis of head and neck SCC. The low sensitivity of F-18 FDG PET/CT was due to limited resolution for small metastatic deposits.
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