Significance of Neoadjuvant Hormonal Therapy in Radical Retropubic Prostatectomy: A Retrospective Single-Surgeon Study

Fukashi Yamamichi,Katsumi Shigemura,Shinichi Morishita,Kunito Yamanaka,Kazushi Tanaka,Hideaki Miyake,Masato Fujisawa 연세대학교의과대학 2013 Yonsei medical journal Vol.54 No.2

Purpose: The purpose of this study was to evaluate whether neo-adjuvant hormonal therapy (NHT) prior to radical retropubic prostatectomy (RRP) for prostate cancer (PCa) is beneficial in terms of surgical outcomes and for preventing or delaying biochemical recurrence via single-surgeon case series study. Materials and Methods: Fifty-three men underwent RRP by a single surgeon. The patients were divided into two groups according to whether or not NHT was performed prior to RRP. The study was analyzed retrospectively. We evaluated clinical parameters,surgical parameters, and biochemical recurrence rate. Group 1 (n=34) was treated with RRP only, while Group 2 (n=19) underwent RRP along with NHT. Results: There were no significant differences in clinical, operation-related and pathological factors between the two groups (p>0.05). There was also no significant difference in biochemical recurrence rate between the two groups at the last follow-up, although Group 2 tended to have a lower PCa recurrence rate than Group 1 and the initial prostate-specific antigen (PSA) level was significantly higher in Group 2 than Group 1 (p=0.0496). Conclusion: The present single-surgeon case series study revealed a trend toward a lower rate of PCa recurrence in NHT+RRP treated patients compared to those treated with RRP alone, but this did not reach statistical significance, despite the fact that NHT+RRP patients exhibited higher serum PSA levels preoperatively. Prospective studies with a longer duration of observation and a greater number of patients would be helpful in evaluating NHT more definitively.

Surgery for Pulmonary Fungal Infections Complicating Hematological Malignancies

Takashi Yamamichi, M.D.,Hirotoshi Horio,Ayaka Asakawa,Masayuki Okui,Masahiko Harada 대한흉부외과학회 2018 Journal of Chest Surgery (J Chest Surg) Vol.51 No.5

Background: The complication rate of fungal disease is higher among patients with hematological malignancies. We investigated the clinicobacteriological outcomes of resected pulmonary fungal infections complicating hematological malignancies. Methods: Between 2001 and 2017, 21 patients with pulmonary fungal infections complicating hematological malignancies underwent resection, and their clinical records and survival were retrospectively reviewed. Results: The median age of the patients was 47 years, and 13 were male. The histological diagnoses were pulmonary aspergillosis (19 cases), mucormycosis (1 case), and cryptococcosis (1 case). The indications for surgery were resistance to antifungal therapy and the necessity of surgery before hematopoietic stem cell transplantation in 13 and 8 cases, respectively. The diagnoses of the hematological malignancies were acute myelogenous leukemia (10 cases), acute lymphocytic leukemia (5 cases), myelodysplastic syndrome (3 cases), and chronic myelogenous leukemia, malignant lymphoma, and extramedullary plasmacytoma (1 case each). The surgical procedures were partial resection (11 cases), segmentectomy (5 cases), lobectomy (4 cases), and cavernostomy (1 case). The size of the lesions was 0.9–8.5 cm. Fourteen cases had cavitation. There were no surgical-related deaths or fungal progression. Conclusion: Pulmonary fungal infections are resistant to treatments for hematological malignancies. Since the treatment of the underlying disease is extended and these infections often recur and are exacerbated, surgery should be considered when possible.

What are the differences between older and younger patients with epididymitis?

Fukashi Yamamichi,Katsumi Shigemura,Soichi Arakawa,Masato Fujisawa 대한비뇨의학회 2017 Investigative and Clinical Urology Vol.58 No.3

Purpose: According to the aging of society and the spread of antibiotic-resistant strains, it is worth considering the different aspects of epididymitis (EP) in older and younger patients, even though the etiology and therapeutic strategies of this disease are considered to be established. Thus, we investigated how age affects EP-related symptoms. Materials and Methods: Data were gathered from 7 hospitals in Hyogo, Japan, and the correlations of age (older or younger) with urine findings such as pyuria or bacteriuria and EP-related symptoms such as fever were investigated. Results: In all 308 cases with full data for evaluation, there were 66 febrile (38℃ or higher) cases (21.4%) and bacteriuria was seen in 158 cases (51.3%). In the multivariate analysis, older age (65 years or older) was significantly correlated with the presence of pyuria (p=0.0156). Regarding the relationship between urine findings and EP-related symptoms, pyuria was significantly related to fever (37℃ or higher; p=0.0159). Conclusions: Our data showed that older patients with EP had pyuria significantly more often than did younger patients, which correlated with EP-related symptoms (fever). These data suggest that age-specific guidelines may be necessary.

Pure Red Cell Aplasia Associated with Good Syndrome

Masayuki Okui,Takashi Yamamichi,Ayaka Asakawa,Masahiko Harada,Hirotoshi Horio 대한흉부외과학회 2017 Journal of Chest Surgery (J Chest Surg) Vol.50 No.2

Pure red cell aplasia (PRCA) and hypogammaglobulinemia are paraneoplastic syndromes that are rarer than myasthenia gravis in patients with thymoma. Good syndrome coexisting with PRCA is an extremely rare pathology. We report the case of a 50-year-old man with thymoma and PRCA associated with Good syndrome who achieved complete PRCA remission after thymectomy and postoperative immunosuppressive therapy, and provide a review of the pertinent literature.

Resection for Pancreatic Cancer Lung Metastases

Masayuki Okui,Takashi Yamamichi,Ayaka Asakawa,Masahiko Harada,Hirotoshi Horio 대한흉부외과학회 2017 Journal of Chest Surgery (J Chest Surg) Vol.50 No.5

Background: Pancreatic cancer is a highly aggressive solid tumor. Patients with metastases from pancreatic cancer have poor survival rates. Here, we report the outcomes of 6 patients for whom resection of lung metastases was performed after a pancreatectomy to treat pancreatic cancer. Methods: We retrospectively reviewed the perioperative clinical data of patients with lung metastases resulting from primary pancreatic cancer who were treated with lung resection between 2008 and 2015. We report 6 cases where lung resection was performed to treat lung metastases after a pancreatectomy. Results: The number of lung metastases was 1 in 5 cases and 2 in 1 case. The surgical procedures performed to treat the lung metastases included 4 wedge resections and 2 lobectomies. The cell type of the primary tumor and metastases was tubular adenocarcinoma in 5 cases and intraductal papillary-mucinous carcinoma in 1 case. All 6 patients survived with a mean follow-up period of 65.6 months, although the disease recurred in 2 patients. Conclusion: Resection of lung metastases resulting from primary pancreatic cancer may lengthen survival, provided the patient can tolerate surgery.

A Software Model Suitable for NE Development and its Running Environment

Shigeto Masuda,Noboru Yamamichi,Kouji Yokochi 대한전자공학회 1996 ITC-CSCC :International Technical Conference on Ci Vol.- No.-

Comparison of Predictive Factors for Postoperative Incontinence of Holmium Laser Enucleation of the Prostate by the Surgeons’ Experience During Learning Curve

Katsumi Shigemura,Kazushi Tanaka,Fukashi Yamamichi,Koji Chiba,Masato Fujisawa 대한배뇨장애요실금학회 2016 International Neurourology Journal Vol.20 No.1

Purpose: To detect predictive factors for postoperative incontinence following holmium laser enucleation of the prostate (Ho- LEP) according to surgeon experience (beginner or experienced) and preoperative clinical data. Methods: Of 224 patients, a total of 203 with available data on incontinence were investigated. The potential predictive factors for post-HoLEP incontinence included clinical factors, such as patient age, and preoperative urodynamic study results, including detrusor overactivity (DO). We also classified the surgeons performing the procedure according to their HoLEP experience: beginner (<21 cases) and experienced (≥21 cases). Results: Our statistical data showed DO was a significant predictive factor at the super-short period (the next day of catheter removal: odds ratio [OR], 3.375; P=0.000). Additionally, patient age, surgeon mentorship (inverse correlation), and prostate volume were significant predictive factors at the 1-month interval after HoLEP (OR, 1.072; P=0.004; OR, 0.251; P=0.002; and OR, 1.008; P=0.049, respectively). With regards to surgeon experience, DO and preoperative International Prostate Symptom Score (inverse) at the super-short period, and patient age and mentorship (inverse correlation) at the 1-month interval after HoLEP (OR, 3.952; P=0.002; OR, 1.084; P=0.015; and OR,1.084; P=0.015; OR, 0.358; P=0.003, respectively) were significant predictive factors for beginners, and first desire to void (FDV) at 1 month after HoLEP (OR, 1.009; P=0.012) was a significant predictive factor for experienced surgeons in multivariate analysis. Conclusions: Preoperative DO, IPSS, patient age, and surgeon mentorship were significant predictive factors of postoperative patient incontinence for beginner surgeons, while FDV was a significant predictive factors for experienced surgeons. These findings should be taken into account by surgeons performing HoLEP to maximize the patient’s quality of life with regards to urinary continence.

Postoperative Infectious Complications in Our Early Experience With Holmium Laser Enucleation of the Prostate for Benign Prostatic Hyperplasia

Katsumi Shigemura,Kazushi Tanaka,Takahiro Haraguchi,Fukashi Yamamichi,Mototsugu Muramaki,Hideaki Miyake,Masato Fujisawa 대한비뇨의학회 2013 Investigative and Clinical Urology Vol.54 No.3

Purpose: The objective of this study was to retrospectively investigate postoperative infectious complications (PICs) in our early experience with holmium laser enucleation of the prostate (HoLEP) followed by mechanical morcellation for symptomatic benign prostatic hyperplasia. Materials and Methods: A retrospective review was performed of the clinical data for 90 consecutive patients who underwent HoLEP at our institution between February 2008 and March 2011. All patients were evaluated for the emergence of PICs, including prophylactic antibiotic administration (PAA) and the influence of the kind or duration of PAA on PIC. The details of cases with PICs were also examined. Results: The patients’ mean age was 71 years (range, 50 to 95 years), and their mean prostate volume was 60 mL (range, 2 to 250 mL). There were 7 cases (7.78%) with PICs;in detail, 3 patients were diagnosed with prostatitis, 2 with pyelonephritis, and 2 with epididymitis. Three patients had positive urine cultures: 1 had Serratia marcescens/Proteus mirabilis, 1 had S. marcescens, and 1 had Klebsiella pneumonia; only one case had urological sepsis. Our statistical data showed no significant differences between 2 or fewer days and 3 or more days of PAA and PIC occurrence. There was also no significant effect on PIC occurrence of sulbactam/ampicillin compared with other antibiotics. Conclusions: The results of this retrospective study showed that PIC occurrence did not depend on the duration or the kind of PAA. Further prospective study is necessary for the evaluation and establishment of prophylactic measures for PICs.

Submucosal Injection of Normal Saline can Prevent Unexpected Deep Thermal Injury of Argon Plasma Coagulation in the in vivo Porcine Stomach

( Mitsuhiro Fujishiro ),( Shinya Kodashima ),( Satoshi Ono ),( Osamu Goto ),( Nobutake Yamamichi ),( Naohisa Yahagi ),( Koji Kashimura ),( Toyokazu Matsuura ),( Mikitaka Iguchi ),( Masashi Oka ),( Mas 대한소화기학회 2008 Gut and Liver Vol.2 No.2

Background/Aims: There have been several reports of thermal injury induced by argon plasma coagulation (APC) in animal models, but no follow-up studies have revealed the actual thermal injury. Methods: APC was performed on the stomachs of two living minipigs with and without prior submucosal injection of normal saline. The power and argon gas flow were set to 60 watts and 2 L/min, respectively, and pulse durations of 5, 10, and 20 seconds were used. One of the minipigs was killed immediately thereafter and the other was killed 1 week later. Results: The minipig killed immediately showed only subtle differences between noninjected and injected injuries under all the conditions, and the usefulness of prior submucosal injection was not obvious. However, the minipig killed 1 week later had a deep ulcer extending to the deeper muscle layer at the noninjected site where APC had been applied for 20 seconds, whereas tissue injury of the injected site was limited to the submucosal layer. Conclusions: Unexpected tissue damage can occur even using a short-duration APC. Prior submucosal injection for APC might be a safer alternative technique, especially in a thinner and narrower gut wall.

CASE REPORT : Preoperative Iodine Staining May Complicate the Demarcation of Esophageal Carcinoma

( Itsuko Asada Hirayama ),( Satoshi Ono ),( Shinya Kodashima ),( Keiko Niimi ),( Satoshi Mochizuki ),( Nobutake Yamamichi ),( Mitsuhiro Fujishiro ),( Keisuke Matsusaka ),( Masashi Fukayama ),( Kazuhik 대한소화기학회 2013 Gut and Liver Vol.7 No.4

A 53-year-old man was suspected of having an esophageal neoplasm. An endoscopic examination including Lugol chromoendoscopy suggested an esophageal squamous cell neoplasm limited to the lamina propria. A targeted biopsy showed atypical squamous cells, and an endoscopic submucosal dissection was performed 22 days after the previous endoscopy. Although a single 40 mm unstained area was observed by preoperative Lugol chromoendoscopy, intraoperative endoscopy revealed a 25 mm iodine-unstained area, with small unstained areas scattered on the oral side. We included the small unstained areas in the extent of the resection through assessment by preoperative endoscopy. Histopathologically, the tumor extent appeared to coincide with the preoperative assessment. Tumor cells were found in the basal-parabasal layers of the mucosa, in which small unstained areas were scattered, although the superficial layers exhibited well-differentiated cells containing glycogen in the cytoplasm. Although Lugol chromoendoscopy, which can induce chemical esophagitis, is widely used, re-epithelialization after mucosal damage by preoperative iodine staining may complicate the intraoperative demarcation of tumors. (Gut Liver 2013; 7:492-496)