Background: Melanoma is a neoplasm derived commonly from melanocytic cells of skin. Although coetaneous presentation of malignant melanoma is easily recognizable, the presentation of melanoma in other organs is so confusing. In particular, when it metastasizes to other organs, many bizarre figures and unusual organs may be involved. In this report, we present a case of primary duodenal malignan...

Patients with the autosomal-dominant form of multiple familial trichoepithelioma develop numerous tumours on the face, neck and upper trunk, beginning in childhood. Malignant transformation of such lesions is quite rare; only one case of "malignant trichoepithelioma" has been reported previously, inferring pilomatrix carcinoma on a histological observation. We report here the case of a patient ...

OBJECTIVE To identify the different histopathological types of ovarian neoplasms and their age distribution. METHODS This is a retrospective study were ovarian neoplasms received by the Pathology Department of King Abdulaziz University, Jeddah, Saudi Arabia between January 1995 and December 2010 were reviewed and their frequencies in different age groups were calculated. RESULTS Out of 618...

Background: Within the context of developing techniques to facilitate the diagnosis of the thyroid diseases, the elemental composition of pathological thyroid tissue (neoplastic and non-neoplastic) was investigated by proton induced X-ray emission. The PIXE has been widely used as a sensitive technique for trace elemental analysis in both biological and medical fields. Materials and Methods: Th...

OBJECTIVE We prospectively assessed the age- and sex-specific incidence and relative risk of malignant neoplasm of the pancreas in Taiwan's diabetic population. RESEARCH DESIGN AND METHODS A total of 615,532 diabetic patients and 614,871 age- and sex-matched control subjects were linked to inpatient claims (2000-2006) to identify the admissions for malignant neoplasm of the pancreas (ICD-9: 1...

OBJECTIVE To show the benefits of fine-needle aspiration biopsy (FNAB) in managing thyroid nodules. METHODS As a retrospective study, reports of 888 FNABs of the thyroid performed during a period of 11 years (1996-2007) at Tehran University of Medical Sciences, Sina Hospital and Endocrine Clinic, Tehran, Iran were reviewed. Histological diagnoses were available for 182 cases, and we compared ...

background: within the context of developing techniques to facilitate the diagnosis of the thyroid diseases, the elemental composition of pathological thyroid tissue (neoplastic and non-neoplastic) was investigated by proton induced x-ray emission. the pixe has been widely used as a sensitive technique for trace elemental analysis in both biological and medical fields. materials and methods: th...

Langerhans cell histiocytosis (LCH) is a rare neoplasm defined as the proliferation of bone marrow langerhans cells, which is a kind of dendritic cells. The major pathological features of LCH are expression of CD1a and S100 as well as Birbeck granules. Its presentation can differ from a mild bone lesion to a multi-systemic evolved malignant neoplasm; however, the latter outcome is almost rare. ...