ADENOCARCINOMA DE PRÓSTATA - ADENOCARCINOMA PROSTATICO - CÁNCER DE PRÓSTATA
An adenoma is a benign tumor of epithelial tissue with glandular origin, glandular characteristics, or both. Adenomas can grow from many glandular organsincluding the adrenal glandspituitary prostata fase adenoma 1thyroidprostateand others. Some adenomas grow from epithelial tissue in nonglandular areas but express glandular tissue structure as can happen in familial polyposis coli.
Although adenomas are benignthey should be treated as pre-cancerous. Over time adenomas may transform to become malignantat which point they are called adenocarcinomas. Most adenomas do not transform. However, even though benign, they have the potential to cause serious health complications by compressing other structures mass effect and by producing large amounts of hormones in an unregulated, non-feedback-dependent manner causing paraneoplastic syndromes.
Some adenomas are too small to be seen macroscopically but can still cause clinical symptoms. Adenoma is a benign tumor of glandular tissue, such as the mucosa of stomach, small intestine, and colon, in which tumor cells form glands or gland like structures. In hollow organs digestive tractthe adenoma grows into the lumen - adenomatous polyp or polypoid adenoma. Depending prostata fase adenoma 1 the type of the insertion base, adenoma may be pedunculated lobular head with a long slender stalk or sessile broad base.
The adenomatous proliferation is characterized by different degrees of cell dysplasia atypia or loss of normal differentiation of epithelium irregular cells with hyperchromatic nuclei, pseudo stratified nuclei, nucleolus, decreased mucosecretion, and mitosis. The architecture may be tubular, villous, or tubulo-villous.
Basement membrane and muscularis mucosae are intact. Adenomas of the colon, also called adenomatous polypsprostata fase adenoma 1 quite prevalent. They are found commonly at colonoscopy. They are removed because of their tendency to become malignant and to lead to colon cancer. This is a prostata fase adenoma 1 that is most often small and asymptomatic, and is derived from renal tubules.
It may be a precursor lesion to renal carcinoma. Adrenal adenomas are common, and are often found on the abdomen, usually not as the focus of investigation; they are usually incidental findings. About one prostata fase adenoma 1 10, is malignant. Thus, a biopsy is rarely called for, especially if the lesion is prostata fase adenoma 1 and smaller than 3 centimeters.
Follow-up images in three to six months can confirm the stability of the growth. While some adrenal adenomas do not secrete hormones at all, often some secrete cortisolcausing Cushing's syndromealdosterone causing Conn's syndromeor androgens causing hyperandrogenism.
About one in 10 people is found to have solitary thyroid nodules. Investigation is required because a small percentage of these is malignant. Biopsy usually confirms the prostata fase adenoma 1 to prostata fase adenoma 1 an adenoma, but, sometimes, excision at surgery is required, especially when the cells found at biopsy are of the follicular type.
A lot of them remain undiagnosed. Treatment is usually surgical, to which patients generally respond well. The most common subtype, prolactinomais seen more often in women, and is frequently diagnosed during pregnancy as the hormone progesterone increases its growth. Medical therapy with cabergoline or bromocriptine generally suppresses prolactinomas; progesterone antagonist therapy has not proven to be successful.
An adenoma of a parathyroid gland may secrete inappropriately high amounts of parathyroid hormone and thereby cause primary hyperparathyroidism. Hepatic adenomas are a rare benign tumour of the liver, which may present with hepatomegaly or other symptoms.
Breast adenomas are called fibroadenomas. They are often very small and difficult to detect. Often there are no symptoms. Adenomas can also appear in the appendix. The condition is extremely rare. The most common version is called cystadenoma. They are usually discovered in the course of examination of the tissue following an appendectomy. If the appendix has ruptured and a tumor is present, this presents challenges, especially if malignant cells have formed and thus spread to the abdomen.
Bronchial adenomas are adenomas in the bronchi. They may cause carcinoid syndromea type of paraneoplastic syndrome. A sebaceous adenoma is a cutaneous condition characterized by a slow-growing tumour usually presenting as a pink, flesh-coloured, or yellow papule or nodule. Most salivary gland tumors are benign — that is, they are not cancer and will not spread to other parts of the body. These tumors are almost never life-threatening.
There are many types of benign salivary gland tumors, with names such as adenomas, oncocytomas, Warthin tumors, and benign mixed tumors also known as pleomorphic adenomas. Benign tumors are almost always cured by surgery. Very rarely, they may become cancer if left untreated for a long time or if they are not completely removed and grow back. It's not clear exactly how benign tumors become cancers. There are many types of salivary gland cancers.
Normal salivary glands are made up of several different types of cells, and tumors can start in any of these cell types. Salivary gland cancers are named according to which of these cell types they most look like when seen under a microscope. The main types of cancers are described below. Doctors usually give salivary cancers a grade from 1 to 3, or from low to highbased prostata fase adenoma 1 how abnormal the cancers look under a microscope.
The grade gives a rough idea of how quickly it is likely to grow and spread. Prostate adenoma develops prostata fase adenoma 1 the periurethral glands at the site of the median or lateral lobes. A physician's response to detecting an adenoma in prostata fase adenoma 1 patient will vary according to the type and location of the adenoma prostata fase adenoma 1 other factors.
Prostata fase adenoma 1 common example of treatment is the response recommended by specialty professional organizations upon removing adenomatous polyps from a patient. In the common case of removing one or two of these polyps from the colon from a patient with no particular risk factors for cancer, thereafter the best practice is to resume surveillance colonoscopy after 5—10 years rather than repeating it more frequently than the standard recommendation.
From Wikipedia, the free encyclopedia. Type of benign tumor. Further information: Thyroid adenoma. Further information: Hepatocellular adenoma. Robbins Basic Pathology. Philadelphia: Saunders. Retrieved 3 April A Cluster-Randomized Trial". The American Journal of Gastroenterology. ICD - 10 : D12D Glandular and epithelial neoplasms ICD-O Small prostata fase adenoma 1 carcinoma Combined small prostata fase adenoma 1 carcinoma Verrucous carcinoma Squamous cell carcinoma Basal cell carcinoma Transitional cell carcinoma Inverted papilloma.
Prostata fase adenoma 1 cell carcinoma Endometrioid tumor Renal oncocytoma. Lobular carcinoma in situ Invasive lobular carcinoma. Medullary carcinoma of the breast Medullary thyroid prostata fase adenoma 1. Acinic cell prostata fase adenoma 1. Warthin's tumor Thymoma Bartholin gland carcinoma.
Normal colorectal mucosa is seen on the right of the image. Complex epithelial Warthin's tumor Thymoma Bartholin gland carcinoma.