esophageal cancer is the ninth most common malignancy.the incidence of esophageal cancer varies greatly among regions of the world and occurs at a high frequency in asia and northern iran. we report the case of an 80-year-old man with esophageal squamous cell carcinoma who initially presented with a metastatic scalp lesion. esophagoscopy was performed and a lesion was located in the mid-portion...

Magnetic measurements of average power of human alpha and beta activity over the occipital and parietal areas of the scalp reveal spatially selective suppression of the activity of the occipital cortex when abstract figures are briefly presented visually and subjects simply indicate that they saw the figure. However, the duration of the suppression increases markedly when subjects must indicate...

One brother and one sister, of seven siblings, had cirsoid aneurysms of the occipital scalp with underlying skull defects and possible intracranial communication. Another sister had no gross scalp abnormality but radiographs of the skull revealed a small occipital bony defect. This is thought to be the first reported example of familial cirsoid aneurysm of the scalp.

BACKGROUND Basal cell carcinoma (BCC) is the most common type of human cancer. Despite the high prevalence of these tumors, there is a lack of reliable epidemiological data in some regions including Iran. OBJECTIVE To assess the relationship between BCC subtypes and anatomical distribution in the Iranian population. METHODS There were 876 patients with a single BCC enrolled in this study (M...

Previous research has identified a component of the event-related brain potential (ERP), the feedback-related negativity, that is elicited by feedback stimuli associated with unfavourable outcomes. In the present research we used event-related functional magnetic resonance imaging (fMRI) and electroencephalographic (EEG) recordings to test the common hypothesis that this component is generated ...

A reference-independent measure of potential is helpful for studying the multichannel EEG. The potentials integrated over the surface of the body is a constant, i.e. inactive across time, regardless of the activity and distribution of brain electric sources. Therefore, the average reference, the mean of all recording channels at each time point, may be used to approximate an inactive reference....

BACKGROUND Malassezia species play an important role in the pathogenesis of seborrheic dermatitis. In particular, M. restricta and M. globosa are considered to be the predominant organisms in seborrheic dermatitis of Western countries. However, species distribution of Malassezia in seborrheic dermatitis has not been clearly determined yet in Asia. OBJECTIVE To identify the distribution of Mal...

Event-related potential (ERP) studies using the task-switching paradigm show that multiple ERP components are modulated by activation of proactive control processes involved in preparing to repeat or switch task and reactive control processes involved in implementation of the current or new task. Our understanding of the functional significance of these ERP components has been hampered by varia...