INTRODUCTION Pseudoachalasia is a rare disease that accounts for only a small percentage of patients with dysphagia. Neuroendocrine tumors are rare malignancies that most commonly originate within the gastrointestinal tract, with the next most common site being the lungs. Esophageal neuroendocrine tumors are the least common site within the gastrointestinal tract. Pseudoachalasia can be seconda...

neuroendocrine cells are of the peptide and amine secreting cells and because of endodermal origin, exist in respiratory and gastrointestinal system. the report confirms the presence of a tumor using immunohistochemical methods. a hepatic mass was detected in a 10-year-old male mixed–breed dog which was referred with clinical history of frequent vomiting, anorexia, lethargy and syncope. biochem...

Neuroendocrine carcinomas have become increasingly recognized as more reports are emerging to describe these rare tumors. Primary sites include the lung, liver, throat, and other organs. Laryngeal neuroendocrine carcinomas are relatively rare, and the subtypes as well as the prognoses are quite different in most cases. Metastases to the liver, lungs and other parts are common. However, metastas...

Primary neuroendocrine carcinoma of the skin or Merkel cell carcinoma is an aggressive primary neoplasm. It is commonly seen in the elderly, on the head, neck and extremities, where it can mimic a benign or less malignant skin tumour. Pathological examination shows a generally dense growth of small dark cells, with immunohistochemical evidence of neuroendocrine differentiation. The microscopic ...

Merkel cell carcinoma (MCC) is the eponym for primary cutaneous neuroendocrine carcinoma. Recently, a new polyoma virus has been identified that is clonally integrated in the genome of the majority of MCCs, with truncating mutations in the viral large T antigen gene. We examined the presence of Merkel cell polyomavirus (MCV) in a set of 17 frozen tumor samples by quantitative polymerase chain r...

An association of systemic amyloid with a squamous cell carcinoma of the bronchus is described. Amyloid may be associated with myeloma and neuroendocrine tumours but has not been described in squamous cell carcinoma of the bronchus.

A 67-year-old woman was admitted to our hospital under suspicion of a hepatic tumor, which had been previously diagnosed to be an adenocarcinoma by fine needle aspiration. Computed tomography and magnetic resonance imaging revealed a large tumor measuring 9 cm in diameter in Couinaud's hepatic segments 4, 5, and 8. We diagnosed the patient to have primary liver cancer, and suspected intrahepati...