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Diffusion-weighted MR imaging in gynecologic cancers
Shigenobu Motoshima,Hiroyuki Irie,Takahiko Nakazono,Toshiharu Kamura,Sho Kudo 대한부인종양학회 2011 Journal of Gynecologic Oncology Vol.22 No.4
Diffusion-weighted imaging (DWI) reflects changes in proton mobility caused by pathological alterations of tissue cellularity, cellular membrane integrity, extracellular space perfusion, and fluid viscosity. Functional imaging is becoming increasingly important in the evaluation of cancer patients because of the limitations of morphologic imaging. DWI is being applied to the detection and characterization of tumors and the evaluation of treatment response in patients with cancer. The advantages of DWI include its cost-effectiveness and brevity of execution, its complete noninvasiveness, its lack of ionizing radiation, and the fact that it does not require injection of contrast material, thus enabling its use in patients with renal dysfunction. In this article, we describe the clinical application of DWI to gynecological disorders and its diagnostic efficacy therein.
Naotake Tsuda,Kimio Ushijima,Kouichiro Kawano,Shuji Takemoto,Shin Nishio,Gounosuke Sonoda,Toshiharu Kamura 대한부인종양학회 2014 Journal of Gynecologic Oncology Vol.25 No.3
Objective: A number of new techniques have been developed to prevent lymphocele formation after pelvic lymphadenectomy in gynecologic cancers. We assessed whether the electrothermal bipolar vessel sealing device (EBVSD) could decrease the incidence of postoperative lymphocele secondary to pelvic lymphadenectomy. Methods: A total of 321 patients with gynecologic cancer underwent pelvic lymphadenectomy from 2005 to 2011. Pelvic lymphadenectomy without EBVSD was performed in 134 patients, and pelvic lymphadenectomy with EBVSD was performed in 187 patients. We retrospectively compared the incidence of lymphocele and symptoms between both groups. Results: Four to 8 weeks after operation, 108 cases of lymphocele (34%) were detected by computed tomography scan examination. The incidence of lymphocele after pelvic lymphadenectomy was 56% (75/134) in the tie ligation group, and 18% (33/187) in the EBVSD group. We found a statistically significant difference in the incidence of lymphocele between both groups (p<0.01). To detect the independent risk factor for lymphocele development, we performed multivariate analysis with logistic regression for three variables (device, number of dissected lymph nodes, and operation time). Among these variables, we found a significant difference (p<0.001) for only one device. Conclusion: Use of the EBVSD during gynecological cancer operation is useful for preventing the development of lymphocele secondary to pelvic lymphadenectomy.
Kimio Ushijima,Keizo Fujiyoshi,Kouichiro Kawano,Naotake Tsuda,Shin Nishio,Hidehiro Eto,Toshiharu Kamura 대한부인종양학회 2013 Journal of Gynecologic Oncology Vol.24 No.2
Objective: To evaluate the clinical efficacy of concurrent chemoradiotherapy (CCRT) using daily low-dose cisplatin for cervical cancer. Methods: Fifty-one patients with locally advanced cervical cancer (FIGO stage IB2, bulky IIA, IIB-IVA) who were treated with CCRT as primary therapy at Kurume University Hospital between 2000 and 2007 were retrospectively reviewed. CCRT consisted of 5 mg/m2/day of cisplatin 5 days per week, and external beam radiotherapy (EBRT) administrated to whole pelvis to 45-50.6 Gy. High-dose-rate intracavitary brachytherapy was delivered in a single dose of 4-5 Gy at point A, once a week after 20-30 Gy of EBRT. Results: The median follow-up duration was 42 months (range, 5 to 116 months). The overall response rate was 94.1%. Five year overall survival rate was 71.5% and 46.2% in stage I or II, and stage III or IVA, respectively. During follow-up period, 30 recurrences (58.8%) were found, the local failure rate was 39%, and distant failure rate was 35.2%, and both (local and distant) were 15.7%. Hematological toxicities were the most frequent acute toxicities. Grade 3 and 4 neutropenia was observed in 37.3%. Late intestinal toxicities appeared in 7 cases (13.7%), which occurred between 6 and 114 months after treatment. Four cases required bowel surgery. Conclusion: CCRT using daily low-dose cisplatin was tolerable and showed favorable initial response as the primary therapy for locally advanced uterine cervical cancer. But there was no remarkable long-term benefit for patients’ survival or local disease control in this study. The incidence of late intestinal toxicity still requires further investigation.
Kouichiro Kawano,Kimio Ushijima,Masato Yokomine,Akimasa Fukui,Morio Ijichi,Toshiharu Kamura 대한부인종양학회 2011 Journal of Gynecologic Oncology Vol.22 No.1
A 61-year old woman underwent total abdominal hysterectomy and pelvic lymph node dissection under the diagnosis of endometrial cancer. Although pelvic lymph nodes were positive for adenocarcinoma with psamomma bodies, no other lesion that was a primary lesion was verified. A postoperative study revealed the existence of para-aortic lymph node and supraclavicular lymph node metastases. Therefore, the endometrial biopsy specimen was reviewed. With the findings of p53 positivity by immunohistochemistry in the papillary part, the final histopathological diagnosis was changed to endometrial serous adenocarcinoma. Postoperative chemotherapy followed by radiotherapy for supraclavicular lymph node metastasis achieved complete response. This type of tumor must be considered in a differential diagnosis when metastatic papillary serous carcinoma is detected, but the primary site remains unknown.
( Kimio Ushijima ),( Shuji Takemoto ),( Kouichiro Kawano ),( Shin Nishio ),( Atsumu Terada ),( Naotake Tsuda ),( Gonosuke Sonoda ),( Syun Ichiro Ota ),( Toshiharu Kamura ) 대한산부인과학회 2012 Obstetrics & Gynecology Science Vol.55 No.4
Type III radical abdominal hysterectomy (RAH) is standard care for early stage cervical cancer. For the past few decades, there has been a remarkable shift from surgery to radiation, in the treatment choice for stage 1b2 and 2b cervical cancer in Japan. It is still controversial, however because some of those cases recommended RAH as a suitable treatment strategy. About 8% to 10% of RAH are abandoned because of tumor status. Recent preoperative screening cannot always detect them preoperatively. Various kinds of new surgical instruments, such as bipolar scissors and the electro vessel sealing system LigaSure have contributed to reducing the operation time and blood loss, in performing RAH. Furthermore, various kinds of devices are on the market. Surgeons should choose suitable instruments depending on the state of the disease and the patient.