An unusual case of collagenous gastritis in a middle- aged woman with systemic lupus erythromatosis: a case report.

Introduction: Collagenous gastritis is a rare histopathologic disease. It is characterized by marked subepithelial collagen deposition with associated inflammatory infiltrate. It is considered an uncommon disease among the general population.

BRAF mutations in thyroid tumors from an ethnically diverse group.

Background: The molecular etiology of thyroid carcinoma (TC) and other thyroid diseases which may present malignant precursor lesions is not fully explored yet. The purpose of this study was to estimate frequency, type and clinicopathological value of BRAF exon 15 mutations in different types of cancerous and non-cancerous thyroid lesions originating in an ethnically diverse population.

Methods: BRAF exon 15 was sequenced in 381 cases of thyroid lesions including Hashimoto´s thyroiditis, nodular goiters, hyperplastic nodules, follicular adenomas (FA), papillary TC (PTC), follicular variant PTC (FVPTC), microcarcinomas of PTC (micro PTC; tumor size ≤ 1 cm), follicular TC (FTC), and non-well differentiated TC (non-WDTC).

The importance of second opinion in surgical pathology referral material of lymphoma.

Objective: To evaluate the importance of inter-institutional second opinion surgical pathology review of lymphoma, and identify the lymphoma pathologic mimics.

Methods: The surgical pathology material of patients referred to 2 tertiary care hospitals in the western region of Saudi Arabia (King Faisal Specialist Hospital and Research Centre and King Abdulaziz University Hospital, Jeddah, Saudi Arabia), for evaluation or therapy for lymphoma over a 10-year period (August 2001 to August 2011), were reviewed. This study included only cases in which the patient referred with a diagnosis previously made at the primary institution.