A Case of Liver Cancer with Overlapping Myasthenia Gravis, Myocarditis, Seronegative Autoimmune Autonomic Ganglionopathy, and Myositis Symptoms Induced by Atezolizumab: A Case Report.

An 83-year-old man with hepatocellular carcinoma developed muscle weakness, ptosis, and dyspnea 3 weeks after receiving atezolizumab. Soon after, mechanical ventilation was initiated, which was followed by marked blood pressure spikes. The levels of creatine kinase and troponin-I were significantly elevated, and acetylcholine receptor antibodies were positive. The patient was diagnosed with immune checkpoint inhibitor (ICI)-induced myositis, myasthenia gravis (MG), myocarditis, and suspected autoimmune autonomic ganglionopathy (AAG). After immunotherapy, the serum markers and blood pressure normalized, and he was weaned from the ventilator after five months. To our knowledge, this is the first reported case of AAG secondary to ICI-induced myositis, MG, and myocarditis.

Intramural cyst originating from Luschka's duct in the gall bladder: A case report.

INTRODUCTION AND IMPORTANCE: An intramural cyst is a rare lesion that develops in the wall of the gallbladder. Although the acquired cysts originate from the Rokitansky-Aschoff sinus (RAS), the congenital them, such as the duct of Luschka, are rare. Luschka's duct is a unique and specific tissue component that is histologically different from the inherent bile duct and without the communication to the lumen of the gallbladder. CASE PRESENTATION: A woman in her seventies underwent cholecystectomy for the treatment of repeated choledocholithiasis. Pathological examination of the resected specimen revealed multiple cysts in the subserosal tissue of the liver bed. The cysts were lined by cuboidal epithelium and surrounded by hypercellular fibrous tissue. Apart from the Luschka's ducts scattered around the cyst, no other components were observed. Immunohistochemically, the cystic epithelium was different from that of the gallbladder and phenotypically similar to that of the Luschka's duct. DISCUSSION: From histopathological and immunohistological findings, it was suggested that the cysts of the present case are not derived from RAS, which is the most common in the gallbladder, but from the Luschka's duct. CONCLUSION: We report an extremely rare case of intramural cysts that appear to have originated from the Luschka's duct.

[Rhabdomyolysis associated with long-term treatment of esomeprazole].

Proton pump inhibitors (PPIs) have been widely used in the treatment of gastroesophageal reflux disease and peptic ulcer disease. Although they have a potent acid suppressive effect and excellent efficacy in acid-related diseases, PPI-induced rhabdomyolysis has been reported. Here, we report the case of a patient with reflux esophagitis who developed rhabdomyolysis after esomeprazole treatment. A 67-year-old man with reflux esophagitis who had started esomeprazole treatment for the preceding 10 months complained of back and limb fatigue and myalgia. His serum creatinine kinase (CK) level was markedly elevated, and CK isozyme exhibited an MM pattern. He was diagnosed with rhabdomyolysis induced by esomeprazole. The cessation of esomeprazole rapidly improved his symptoms, and the serum CK level was normalized within 16 days. PPI-induced rhabdomyolysis is a rare complication. In most cases, PPI-induced rhabdomyolysis occurs within 3 months after starting PPIs. However, rhabdomyolysis occurred at 10 months after starting esomeprazole treatment in our patient. Early diagnosis of PPI-induced rhabdomyolysis is required even in long-term PPI users.

Spontaneous mesenteric hematoma of the sigmoid colon associated with rivaroxaban: A case report.

INTRODUCTION: Mesenteric hematoma is a rare condition caused by bleeding localized in the mesenteric vascular tree. This is a first report of spontaneous mesenteric hematoma caused by rivaroxaban. PRESENTATION OF CASE: The patient was a 71-year-old man who had taken rivaroxaban for paroxysmal atrial fibrillation. He had experienced abdominal pain and diarrhea for the prior 3 days. He had little melena and was referred to our institute. He presented with hypotension on arrival. Computed tomography (CT) revealed a 10 cm mass in the mesentery of the sigmoid colon with extravasation. Active bleeding from the sigmoid colic arteries was embolized with angiography on the day of admission. On the second day, we operated on the patient. We detected 200 mL of bloody ascites accumulated in the abdomen. The serosa of the sigmoid colon was ruptured along the tenia due to the compression of the hematoma in the mesentery. The sigmoid colon was resected and a descending colostomy was reconstructed. Operative and pathological findings did not reveal the cause of bleeding. We finally diagnosed the patient with spontaneous mesenteric hematoma associated with rivaroxaban. DISCUSSION: Previous reports of mesenteric hematoma with anticoagulant were associated with warfarin. Since rivaroxaban is not affect to the value of prothrombin time (PT) and activated partial thromboplastin time (APTT) and mesenteric hematoma presents non-specific symptoms, it is difficult to diagnose mesenteric hematoma in the patients taking rivaroxaban. CONCLUSION: It is important to keep in mind that mesenteric hematoma is one of the critical complications in patients taking rivaroxaban.

Partial separating gastrojejunostomy for incurable cancer of the stomach or pancreas.

BACKGROUND/AIMS: Advanced stomach or pancreas cancer with antral obstruction has been treated by gastrojejunostomy. The delayed return of gastric emptying, however, frequently occurs. The Devine exclusion procedure has been reported to be the better bypass operation in terms of oral intake, but it needs a drainage tube. In cases where the lesser curvature is invaded, this operation should be avoided. A method of gastroenterostomy, which is safe and shows good outcomes concerning oral intake, is desired. METHODOLOGY: Among 15 patients with advanced stomach or pancreas cancer, 8 received conventional gastrojejunostomy (CG Group), 3 Devine exclusive gastrectomy with a drainage tube (DE Group) and 4 partial separating gastrojejunostomy (PG Group). The partial separating gastrojejunostomy was performed as follows. The stomach was partially partitioned using GIA from the side of the greater curvature. The posterior side of the proximal stomach was anastomosed with the proximal jejunum using a circular stapler instrument. RESULTS: All patients in the DE and SG Groups could eat regular or semi-regular meals. The bleeding from tumor in the DE Group was less than that in the SG and CG Groups. CONCLUSIONS: In cases where the lesser curvature is invaded by tumor or lymph node metastasis, partial separating gastrojejunostomy would be recommended as a substitute for the Devine procedure.

[Significance of aggressive lymph node dissection in advanced gallbladder carcinoma].

Although aggressive lymph node dissection has been performed in gallbladder carcinoma as well as in other carcinomas of the alimentary tract, there is no definitive evidence of the efficacy of extended lymph node dissection. However, extensive lymph node metastasis is well known in advanced carcinoma of the gallbladder. From the viewpoint of the balance between radicality and safety in surgery, wider lymph node dissection consisting of the lymph nodes in the hepatoduodenal ligamentum and parapancreatic area is recommended in selected patients who hare no involvement of the paraaortic lymph nodes. Complete dissection of the superior mesenteric lymph nodes with pancreaticoduodenectomy is unlikely to result in cure.

Allelic imbalance of 14q32 in esophageal carcinoma.

It has been demonstrated that the accumulation of alterations in several oncogenes and tumor suppressor genes plays a role in the initiation and progression of esophageal carcinoma. However, to our knowledge, very few studies have described the molecular genetic changes of chromosome arm 14q in esophageal carcinoma. In this study, we examined 35 primary esophageal carcinomas for allelic imbalance on 14q32. Analysis of four polymorphic microsatellite markers identified 13 (37%) tumors exhibiting allelic imbalance on 14q32 in at least one locus. In particular, the allelic imbalance of the D14S267 marker that has been reported in various tumors as having a high frequency of deletion was observed in 10 of 26 informative cases (38.5%). The commonly deleted regions were delineated by markers D14S65 and D14S250 on 14q32. In regard to the macroscopic features of tumor, the 14q allelic imbalance rate of protruding type tumors was higher than that of the ulcerative type. These data suggest that potential suppressor loci on 14q32 are related to the development and progression of esophageal carcinoma.