male guinea pigs show high susceptibility to burkholderia mallei and have been used as animal models in glanders studies. the purpose of our study was to elucidate glanders comparative pathogenesis in guinea pigs. we present here the histological changes and bacterial isolation that develop over time in guinea pigs inoculated intraperitoneally (ip) with two strain of b. mallei. ten male guinea ...

Ampullary neoplasms are one of the causes of obstructive jaundice. Endoscopic retrograde cholangiopancreatography (ERCP) is useful procedure for diagnosing and tissue sampling of ampullary neoplasms. Ampullectomy by resecting entire ampulla provides whole lesion for pathologic evaluation and also is appropriate for real pathologic staging for further management decision but ampullectomy conside...

Among all the odontogenic origin cyst, radicular cyst is commonest. It generally associated withnonvital tooth which have necrotizing pulp as it an inflammatory cyst. Radicular usually occurs inthe periapical region of tooth. As a true consists pathologic cavity lined by epitheliumand commonly filled with fluid. Treatment option for depends on size, location andduration lesion includes endodont...

Background and Objectives: Benign tumors of the external auditory canal (EAC) are rare among head and neck tumors. The aim of this study was to analyze the clinical features of patients who underwent surgery for an EAC mass confirmed as a benign lesion. Methods: This retrospective study involved 53 patients with external auditory tumors who received surgical treatment at Korea University, Guro ...

purpose: to report a rare malignant melanoma with chalazion-like presentation.  case report: a 36-year old woman with a chalazion-like mass in the left upper lid, having been resected twice, was referred to our center for the management of recurrence. the total resection of the suspicious area was done. histopathologic examination confirmed the diagnosis of malignant melanoma. the appropriate r...

background and aims. pathological fractures are rare in the maxillofacial region and account for less than 2% of all frac-tures in this site. they are defined as fractures that take place when bone has been weakened by an underlying pathologic process. among all pathoses, cysts (although so common in the maxillofacial region) constitute a very small part. here we report a case of a dentigerous ...

Over the past four years (1360-1364) we have surgically treated seven infants for lobar emphysema. The pathologic lesion in all patients was in upper lobe of the left lung. Respiratory distress and pneumonia are the cardinal symptoms of patients with this abnormality. Diagnosis is confirmed by chest x-ray. The treatment of choice is lobectomy of affected lobe.