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Oncology . Adenocarcinoma in situ(AIS) of the lung—previously included in the category of "bronchioloalveolar carcinoma" (BAC)—is a subtype of lung adenocarcinoma. It tends to arise in the distalbronchiolesor alveoliand is defined by a non-invasive growth pattern. This small solitary tumor exhibits pure alveolar distribution (lepidic growth ...
The concept of grading of the tumors of the central nervous system, agreeing for such the regulation of the "progressiveness" of these neoplasias (from benign and localized tumors to malignant and infiltrating tumors), dates back to 1926 and was introduced by P. Bailey and H. Cushing, in the elaboration of what turned out the first systematic classification of gliomas.
The International Classification of Diseases for Oncology ( ICD-O) is a domain-specific extension of the International Statistical Classification of Diseases and Related Health Problems for tumor diseases. This classification is widely used by cancer registries . It is currently in its third revision (ICD-O-3).
Adenocarcinoma of the lung. A gross pathological specimen of a pulmonary adenocarcinoma, removed in a lobectomy. Adenocarcinoma of the lung is the most common type of lung cancer, and like other forms of lung cancer, it is characterized by distinct cellular and molecular features. [ 1] It is classified as one of several non-small cell lung ...
Vulvar intraepithelial neoplasia ( VIN) refers to particular changes that can occur in the skin that covers the vulva. VIN is an intraepithelial neoplasia, and can disappear without treatment. VINs are benign but if the changes become more severe, there is a chance of cancer developing after many years, and so it is referred to as a ...
Specialty. Oncology. Squamous-cell carcinoma ( SCC) of the lung is a histologic type of non-small-cell lung carcinoma (NSCLC). It is the second most prevalent type of lung cancer after lung adenocarcinoma and it originates in the bronchi. Its tumor cells are characterized by a squamous appearance, similar to the one observed in epidermal cells.
PanNETs are a type of neuroendocrine tumor, representing about one-third of gastroenteropancreatic neuroendocrine tumors (GEP-NETs). Many PanNETs are benign, while some are malignant. Aggressive PanNET tumors have traditionally been termed "islet cell carcinoma". PanNETs are quite distinct from the usual form of pancreatic cancer, the majority ...
Lung cancer is a large and exceptionally heterogeneous family of malignancies. Over 50 different histological variants are explicitly recognized within the 2004 revision of the World Health Organization (WHO) typing system ("WHO-2004"), currently the most widely used lung cancer classification scheme.