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A 39-year-old woman underwent partial mastectomy with sentinel lymph node biopsy for right triple negative breast cancer(T2N0M0, Stage ⅡA). Protein Tyrosine Kinase inhibitor Six months later, ipsilateral breast tumor recurrence(IBTR)was observed and paclitaxel plus bevacizumab therapy was started, but anaphylactoid symptoms appeared and the patient was discontinued. Subsequently, eribulin was started, but the IBTR was increased ineffectively. At that point, IBTR had progressed, apparently unresectable, with no distant metastases. We predicted from the patient's background that the patient may be associated with BRCA1 gene mutation and was sensitive to the platinum salts. Carboplatin plus gemcitabine was selected and 6 courses were performed. After the 6 courses, the IBTR were remarkably reduced and resectable, and mastectomy with axillary lymph node dissection were performed. One year after the operation, contralateral breast cancer develop and found to be hereditary breast and ovarian cancer syndrome (HBOC) by Genetic test. About 6 years have passed since local recurrence, but no distant metastases have been observed.A 65-year-old male received the positive result of fecal occult blood. Colonoscopy was performed to reveal a tumor in the ascending colon. The result of biopsy was neuroendocrine carcinoma. Under the preoperative diagnosis of neuroendocrine carcinoma in the ascending colon, cT3N0M0, cStage Ⅱ, laparoscopic ileocecal resection with D3 lymph node dissection was performed. The pathological result was neuroendocrine carcinoma in the ascending colon, pT4aN2M0, pStage Ⅲc. The R0 resection was achieved. As adjuvant chemotherapy, the regimen of cisplatin plus irinotecan was administered for 4 courses. No recurrence was seen until 9 months after the operation, when multiple peritoneal and hepatic metastasis were detected on CT scan. The chemotherapy regimen of etoposide plus carboplatin was started and is now ongoing. The patient is now alive 13 months after the operation.The anti-PD-L1 antibody atezolizumab has become the standard of immunochemotherapy with the results of the international phase Ⅲ trials in lung cancer and breast cancer. We report a case in which atezolizumab was efficiency in PD-L1 (SP142)-positive lung and breast double cancer. link2 A 56-years-old woman. She noticed a lump in her right breast and visited a nearby doctor, who referred her to our hospital for close examination and treatment. Ultrasonography revealed about 5 cm mass on the right mammary gland and axillary lymph nodes swelling. Core-needle biopsy was confirmed invasive ductal carcinoma( ER negative, PgR negative, HER2 negative, Ki-67 high expression). CT findings showed right mammary mass, right axillary lymph nodes swelling, liver mass, and lung tumor with mediastinal lymph nodes swelling. Therefore, a bronchoscopic biopsy was performed and a diagnosis of primary lung cancer was obtained. Pretreatment diagnosis was lung adenocarcinoma, cT2a, N2/3, M1b/1c(HEP, OSS), Stage ⅢA/B or ⅣA/B(PD-L1 positive), and right breast cancer, T4b, N2, M0/1 (HEP, OSS, LYM), Stage ⅢB or Ⅳ triple-negative(PD-L1 positive)double cancer. We underwent surgery(mastectomy with axillar lymph nodes dissection), followed by immunochemotherapy(atezolizumab, carboplatin, paclitaxel)and it was efficiency.The number of elderly breast cancer patients has been increasing recently nevertheless the optimal treatment for the elderly breast cancer patients still remains controversial. In this study, 21 primary breast cancer cases who were equal or older than 85 years old at our hospital were examined their clinical and pathological features. These 21 cases were divided into 2 group; Group A; ten cases who received operations, Group B; eleven cases who did not receive operations. T categories, M categories and clinical stages in Group B were significantly higher than those of Group A. The main causing reason why Group B cases had not received operations was that their primary breast cancer were too advanced to perform operation. Instead of operation, most Group B cases received endocrine therapy or radiotherapy. Group A cases received standard operative procedures including partial or total mastectomy and biopsies or dissection of axillary lymph nodes. Besides, their post- operative courses were good and safe. These results suggest that even for elderly patients, early diagnosis and treatment could improve their prognosis and quality of life. In addition, careful surveillances for elderly breast cancer patients, those who tend to stop attending regular check up to their hospital, should be considered for further assessment for characteristics of elderly breast cancer patients.The patient was a man in his 70s with bone metastasis from renal cell carcinoma who had received immune checkpoint inhibitors(ICI)therapy. After 2 courses of chemotherapy, he was admitted to our hospital with diverticulitis. His diverticulitis could be treated with antibiotics, but he presented with severe hyponatremia and consciousness disorder during hospitalization. Brain MRI showed pituitary swelling, and his serum TSH, ACTH, cortisol levels decreased. We therefore diagnosed him with hypopituitarism due to ICIs. Hydrocortisone improved his hyponatremia and consciousness disorder. Endocrine stimulation tests revealed no reaction of ACTH, and low-level reactions of TSH, LH and FSH, ICIs cause many types of immune- related adverse events(irAEs). The indications for ICI therapy are expanding; thus, we can expect to experience more cases of serious irAEs in association with ICI treatment. Further studies should be performed to improve our understanding of irAEs.Risk classification and clinical management of the DNA variant of unknown significance(VUS)in BRCA 1/2 remains unestablished. The Japanese hereditary breast and ovarian cancer(HBOC)consortium and myriad genetics reported that the VUS rate of BRCA is 6.5% in Japanese patients, but is less then 2% in the USA. The types of mutation supposedly differ between Asian and European ethnicities. Breast-conserving therapy(BCT)is not recommended in HBOC breast cancer, according to the 2017 Japanese guidelines by the Ministry of Health, because of the risk of ipsilateral breast recurrence(IBR)and carcinogenesis by radiation. In our hospital, we recommend an initial mastectomy and breast reconstruction with an implant for patients with HBOC breast cancer, considering future surgery on the contralateral side and symmetry of the reconstructed breast. However, the risk of IBR after BCT is not significantly high in patients with HBOC breast cancer, and BCT is a reasonable option even for definite HBOC breast cancer under low risk conditions. Hence, BCT is feasible for treating breast cancer in carriers of VUS following decision-making and informed consent from the patients.Seventy years old woman noticed a mass in her right breast before 3 years. Since she had ulcer bleeding, she visited our hospital. In physical findings, a hemorrhagic about 8 cm mass with an ulcer was found in the upper right breast. Breast ultrasonography revealed a large tumor of approximately 8 cm in the right A area, and needle biopsy revealed invasive ductal carcinoma(ER positive, PgR positive, HER2 positive, Ki-67 low expression). Right axillary lymph node metastasis was confirmed, but no clear distant metastasis was observed. Pretreatment diagnosis was right breast cancer, cT4bN1M0, Stage ⅢB, Luminal HER. Chemotherapy was started with pertuzumab, trastuzumab, and docetaxel, and the tumor was reduced after 6 cycles. Due to side effects, the drug was changed to a molecular targeted drug only and the treatment was continued. However, redness was observed in the entire right breast, and breast cancer skin metastasis was suspected. Since the dermatitis caused by metronidazole gel was also distinguished, the redness was improved when the application was stopped. When confirmed by a patch test, a reaction to metronidazole gel was observed, leading to the diagnosis of dermatitis caused by metronidazole gel.A 21-year-old woman was admitted for preshock due to severe anemia. A 5 cm gastrointestinal stromal tumor(GIST)at the jejunal flexure of her duodenum was diagnosed by enhanced CT examination. We performed a total laparoscopic pancreas- preserving duodenal sleeve resection with a 2 cm margin from the tumor. Functional end-to-end anastomosis was done with the patient lying in a right half lateral decubitus position in order to shift the weight of the tumor and duodenal mesentery to the right to prevent surgical capsule damage. We experienced one case(5.5%)of peritoneal(recurrent)GIST after laparoscopic gastrectomy. However, this is generally a safe and useful procedure for laparoscopic duodenal sleeve resection of duodenal GIST at a distal portion from the papilla Vater, when performed by a skilled team.A 73-year-old man presented with anemia, and gastroscopy showed a nonpigmented tumor in the esophagogastric junction. The result of the tumor biopsy initially suspected poorly differentiated adenocarcinoma. However, additional immunohistochemical examination revealed malignant melanoma. The final diagnosis was amelanotic malignant melanoma of the esophagogastric junction with adrenal and spinal metastasis. Although immunotherapy was performed, the patient died 132 days after diagnosis.We report a rare case of cavitary lung metastasis of rectal cancer, diagnosed initially as septic pulmonary embolism. A 55- year-old woman underwent emergency Hartmann's operation for perforation of the rectal cancer with multiple liver metastases. A 2 cm-sized thin-walled cavitary lesion was seen in the left upperlobe of the lung by CT, and septic pulmonary embolism was suspected. She recoverd from sepsis after intensive care treatment. Pathological diagnosis is adenocarcinoma (tub2), T3N1M1, Stage Ⅳ, she underwent chemotherapy. Serum CEA level was high preoperatively but gradually decreased to normal 4 months after the operation. Multiple liver metastases showed calcification, and the lung lesions remained unchanged on CT. She continued chemotherapy while changing the anticancer drug due to side effects. One year and 5 months after operation, lung CT showed thickened wall and spicula around the cavitary lesion. Serum CEA level was normal, SLX and NSE slightly increased and serum aspergillus antigen was positive. Bronchial lavage cytology was Class Ⅰ and scrape cytology was Class Ⅲ in bronchoscopy. link3 Lung metastasis, primary lung cancer or aspergilloma were suspected and we performed partial lung resection. The pathological diagnosis was rectal cancer lung metastasis.The patient, a male in his 70s, visited our hospital with a chief complaint of general fatigue and weight loss. Upon a detailed examination, he was diagnosed with sigmoid colon cancer, para-aortic lymph node metastases, and multiple liver metastases, for which he was hospitalized due to a poor performance status(PS). FOLFOX therapy was administered as the symptoms caused by the primary lesion were not recognized and his general condition was considered to be poor and thus he was deemed to be inoperable. After completing 2 courses of the chemotherapy, although his PS improved, laparoscopic sigmoidectomy was carried out with colonic stent placement due to the occurrence of an intestinal obstruction as a result of an enlargement of the primary lesion. Following surgery, 2 courses of FOLFOX therapy and 4 courses of FOLFOX plus bevacizumab therapy were administered and he is alive at 5 months after the operation without progression.