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Appendix cancer, also known as appendiceal cancer, is a very rare malignant tumor that forms in the vermiform appendix. [7] Gastrointestinal stromal tumors are rare tumors with malignant potential. [8] Primary lymphomas can occur in the appendix. Breast cancer, colon cancer, and tumors of the female genital tract may metastasize to the appendix ...
The overall prognosis for patients with mucinous AIS is significantly worse than patients with nonmucinous AIS . [26] [27] Although data are scarce, some studies suggest that survival rates are even lower in the mixed mucinous/non-mucinous variant than in the monophasic forms. [27]
In the few cases described in the literature to date, the male-to-female ratio is approximately unity, and right lung lesions occurred twice as commonly as left lung lesions. Approximately 2/3 of cases have been associated with tobacco smoking. [1] Cases have been reported in patients as young as 29. [8]
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 cancers (NSCLC), to distinguish it from small cell lung cancer which has a different behavior and prognosis.
Approximately 98% of lung cancers are carcinoma, a term describing malignancies derived from transformed cells exhibiting characteristics of epithelium. About 2% of all lung cancers are non-carcinoma (mainly sarcoma, tumors of hematopoietic origin, or germ cell tumors. [5] These forms of lung cancer are usually treated differently from carcinomas.
A subtype of adenocarcinoma, the bronchioloalveolar carcinoma, is more common in female never-smokers, and may have a better long-term survival. [13] This cancer usually is seen peripherally in the lungs, as opposed to small cell lung cancer and squamous cell lung cancer, which both tend to be more centrally located. [14] [15]
Pseudomyxoma peritonei (PMP) is a clinical condition caused by cancerous cells (mucinous adenocarcinoma) that produce abundant mucin or gelatinous ascites. [1] The tumors cause fibrosis of tissues and impede digestion or organ function, and if left untreated, the tumors and mucin they produce will fill the abdominal cavity.
Minimally invasive adenocarcinoma of the lung (MIA) is defined as a small (≤3 cm), solitary tumour with predominant alveolar epithelial appearance (lepidic growth), as in situ adenocarcinoma of the lung, with a zone of focal invasion of the stroma with a size inferior to 5 mm. [1] For MIA—as with adenocarcinoma in situ—, the prognosis is near 100% survival.
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