Malignant transformation of a gastric hyperplastic polyp in a context of Helicobacter pylori-negative autoimmune gastritis: a case report.

Background: Gastric foveolar hyperplastic polyps (GFHPs) are common findings in clinical practice. GFHPs commonly arise in a background of chronic atrophic gastritis, including autoimmune gastritis (type A gastritis), and have a potential risk of malignant transformation.

Case Presentation: In 2005, a 55-year-old Japanese woman underwent upper endoscopy at another hospital and was found to have a pedunculated polyp (10 mm in diameter) on the greater curvature of the lower gastric body.

Metastatic Ovarian Tumors Originating From a Small Bowel Adenocarcinoma - A Case Report and Brief Literature Review.

Approximately 1.6% of tumors metastatic to the ovary of nongynecologic origin are from a small bowel adenocarcinoma (SBA). However, the incidence of SBA is extremely rare (0.

Aortic Intimal Sarcoma Contributes to Atherosclerotic Renovascular Hypertension: An Autopsy Case Report and Review of the Literature.

An autopsy of a 70-year-old man with multiple bone metastases from a malignancy of unknown origin (MUO) and renovascular hypertension revealed an aortic intimal sarcoma (AIS) in the right renal artery accompanied by atherosclerotic changes. AIS appeared as aggregated mutton fat-like translucent particles arising from the intima of the branching portion of the right renal artery and was composed of undifferentiated, fine spindle cells with thicket-like proliferation. AIS was confirmed by immunohistopathology, showing the loss of the lumen lined by CD31-positive endothelium and the expression of CD31, keratin, and vimentin in the viable part of the tumor.

[SMALL CELL CARCINOMA OF THE PROSTATE: A CASE REPORT OF RELATIVE LONG-TERM SURVIVAL].

Small cell carcinoma of the prostate (SCCP) is rare, and no standard treatment regimen has yet been established. The overall prognosis remains poor. We experienced a case who obtained relative long-term survival with two types of chemotherapy treatments.

Potentially disseminated solitary fibrous tumor of the pleura: a case report.

We report a case involving a female patient with frequent relapse, pleural dissemination, and port site recurrence (PSR) of a pleural solitary fibrous tumor (SFT). At the age of 55 years, she underwent tumor resection via video-assisted thoracoscopic surgery (VATS). The tumor arose from the mediastinal pleura; it was 7 cm in diameter and well demarcated.

Complete resection of a complicated huge mesenteric lymphangioma guided by mesenteric computed tomography angiography with three-dimensional reconstruction: report of a case.

We herein describe the case of an adult with a complicated huge lymphangioma of the small bowel mesentery. Computed tomography (CT) confirmed a 45 × 30 × 14 cm multiple and separate, mixed and solid cystic tumor without enhancement by contrast medium in the abdominal cavity. Mesenteric CT angiography with three-dimensional (3D) reconstruction showed that the tumor did not involve the first jejunal artery, although the tumor did involve the subsequent jejunal and ileal arteries and the corresponding segment of the small bowel.

A case of solitary fibrous tumor arising from the palatine tonsil.

Solitary fibrous tumor (SFT) is a distinctive, relatively uncommon soft-tissue neoplasm that usually arises from the pleura. It occurs at various sites; head and neck lesions are very rare. While most of these tumors have a benign course, a small number have malignant potential.

[A case of isolated polyarteritis nodosa appeared in bilateral epididymides with asynchronous onset].

A 78-year-old man visited a hospital with a complaint of painful and swelling scrotums for 7 months. Although left epididymitis was suspected, antibiotic and non-steroidal anti-inflammatory drugs (NSAIDs) had no effects. After visit to our department, we performed left orchiectomy for the diagnosis and pain control.

Rapidly progressive respiratory failure in mixed connective tissue disease: report of an autopsy case.

A 64-year-old woman presented with exertional dyspnea. The case was diagnosed as mixed connective tissue disease (MCTD) due to presence of swollen fingers, Raynaud's phenomenon, muscle weakness, positive anti-U1RNP antibody, pericarditis and interstitial pneumonia. Although the histology from a transbronchial lung biopsy (TBLB) indicated organizing pneumonia, corticosteroid therapy was postponed for two months at the patient's request.

Delayed enhanced hepatosplenic sarcoid nodules on computed tomography in an interferon-naïve hepatitis C patient: a case report and review of the literature.

A 77-year-old woman with chronic type C hepatitis was diagnosed with hypoechoic hepatosplenic nodules on ultrasonography. These lesions showed low density on precontrast computed tomography and delayed enhancement. Judging from laboratory data and images, the nodules were considered unlikely to represent malignancies and were followed conservatively.

Lymphatic invasion in small differentiated-type mucosal gastric cancer.

Endoscopic resection for early gastric cancer is indicated for patients who are at negligible risk of lymph node metastasis. A 71-year-old female underwent endoscopic resection for a 15-mm differentiated-type mucosal gastric tumor, as recommended in the Japanese treatment guidelines. A histological examination revealed lymphatic invasion.

Pulmonary mucosa-associated lymphoid tissue (MALT) lymphoma in Sjögren's syndrome showing only the LIP pattern radiologically.

A 49-year-old woman with a 20-year history of Sjögren's syndrome (SS) was incidentally found to have an abnormal chest X-ray along with dyspnea and desaturation. Chest CT findings showed multiple cystic shadows, ground glass opacity, and small nodule-like lymphocytic interstitial pneumonia (LIP), which have been previously reported. She was diagnosed by surgical lung biopsy to have mucosa-associated lymphoid tissue (MALT) lymphoma.

Ectopic ACTH syndrome associated with large cell neuroendocrine carcinoma of the thymus.

A 38-year-old man was admitted for evaluation of Cushing's syndrome. Physical findings showed swelling of the face, and hypertension, but not Cushingoid stigmata. Laboratory data revealed serum cortisol level of 34.

Sessile serrated adenoma shares similar genetic and epigenetic features with microsatellite unstable colon cancer in a location-dependent manner.

Genetic and epigenetic features of sessile serrated adenoma (SSA), a precursor lesion to colon cancer with microsatellite instability (MSI), were investigated. The aim of this study was to clarify whether there are location-dependent genetic and epigenetic features in SSA. Twenty-two patients with proximal SSAs and 8 with distal SSAs were recruited.

Pathological findings and pulmonary dysfunction after acute respiratory distress syndrome for 5 years.

We report the pathological findings of the lung after acute respiratory distress syndrome (ARDS), and pulmonary function tests during five years of follow-up. A 39-year-old woman, treated for acute myelogenous leukemia, developed ARDS. She recovered from ARDS but suffered from pulmonary aspergillosis.

Atypical carcinoid of the larynx and expressions of proteins associated with molecular targeted therapy.

Objective: We reported an extremely rare case of atypical laryngeal carcinoid, and examined the expression of several proteins for application of molecular targeted therapy.

Method: Case report and review of the literature concerning atypical carcinoid arising from the larynx. The expressions of proteins were determined by immunohistochemical analysis.

KIT and platelet-derived growth factor receptor α gene expression in laryngeal small cell carcinoma.

Objective: Small cell carcinoma has the worst prognosis of all laryngeal neoplasms. In order to further characterise this tumour, with a view to development of new therapeutic approaches, we report the results of KIT gene and platelet-derived growth factor receptor α gene expression analysis, for two extremely rare cases of primary small cell carcinoma of the larynx.

Method: Case reports, including immunohistochemical study, and review of the literature.

Successful treatment of esophageal squamous cell carcinoma in a patient with Fanconi anemia.

Fanconi anemia is a congenital syndrome characterized by hypoplasia of bone marrow and the development of aplastic anemia in childhood, followed by myelodysplastic syndrome and acute myelogenous leukemia in later life. We report here a patient first diagnosed with Fanconi anemia at age 10. Bone marrow transplantation was performed at age 23 and repeated after an episode of rejection at age 25.

Thymic clear cell carcinoma.

We report a 42-year-old man with a rare thymic clear cell carcinoma. Marked nodal metastases involved right hilar, mediastinal, and left supraclavicular regions. Complete resection including thymothymectomy, cervicomediastinal nodal dissection, and right upper lobectomy with hilar lymphadenectomy was successful.

End-stage localized bronchiectasis mimicking a hemangioma.

We report a case of localized bronchiectasis mimicking a hemangioma demonstrated on enhanced chest computed tomography. Left lower lobectomy following selective bronchial arterial embolization was successful. Pathology evaluation showed markedly dilated bronchial arteries along a dilated bronchus displacing the lateral and posterior basal segments.