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Skin Biopsy
Skin biopsy is a biopsy technique in which a skin lesion is removed to be sent to a pathologist to render a microscopic diagnosis. It is usually done under local anesthetic in a physician's office, and results are often available in 4 to 10 days. It is commonly performed by dermatologists. Skin biopsies are also done by family physicians, internists, surgeons, and other specialties. However, performed incorrectly, and without appropriate clinical information, a pathologist's interpretation of a skin biopsy can be severely limited, and therefore doctors and patients may forgo traditional biopsy techniques and instead choose Mohs surgery. There are four main types of skin biopsies: shave biopsy, punch biopsy, excisional biopsy, and incisional biopsy. The choice of the different skin biopsies is dependent on the suspected diagnosis of the skin lesion. Like most biopsies, patient consent and anesthesia (usually lidocaine injected into the skin) are prerequisites. Types Shave biop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biopsy
A biopsy is a medical test commonly performed by a surgeon, interventional radiologist, or an interventional cardiologist. The process involves extraction of sample cells or tissues for examination to determine the presence or extent of a disease. The tissue is then fixed, dehydrated, embedded, sectioned, stained and mounted before it is generally examined under a microscope by a pathologist; it may also be analyzed chemically. When an entire lump or suspicious area is removed, the procedure is called an excisional biopsy. An incisional biopsy or core biopsy samples a portion of the abnormal tissue without attempting to remove the entire lesion or tumor. When a sample of tissue or fluid is removed with a needle in such a way that cells are removed without preserving the histological architecture of the tissue cells, the procedure is called a needle aspiration biopsy. Biopsies are most commonly performed for insight into possible cancerous or inflammatory conditions. History T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anticoagulant
Anticoagulants, commonly known as blood thinners, are chemical substances that prevent or reduce coagulation of blood, prolonging the clotting time. Some of them occur naturally in blood-eating animals such as leeches and mosquitoes, where they help keep the bite area unclotted long enough for the animal to obtain some blood. As a class of medications, anticoagulants are used in therapy for thrombotic disorders. Oral anticoagulants (OACs) are taken by many people in pill or tablet form, and various intravenous anticoagulant dosage forms are used in hospitals. Some anticoagulants are used in medical equipment, such as sample tubes, blood transfusion bags, heart–lung machines, and dialysis equipment. One of the first anticoagulants, warfarin, was initially approved as a rodenticide. Anticoagulants are closely related to antiplatelet drugs and thrombolytic drugs by manipulating the various pathways of blood coagulation. Specifically, antiplatelet drugs inhibit platelet agg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tissue Selection From Skin Excision With Less Than 4 Mm Suspected Malignant Lesion
Tissue may refer to: Biology * Tissue (biology), an ensemble of similar (or dissimilar in structure but same in origin) cells that together carry out a specific function * ''Triphosa haesitata'', a species of geometer moth ("tissue moth") found in North America * ''Triphosa dubitata'', a species of geometer moth ("tissue") found in Afro-Eurasia Paper products * Tissue paper, a type of thin, gauzy translucent paper used for wrapping and cushioning items ** Facial tissue, tissue paper used for cleaning the face ** Japanese tissue, tissue paper from Japan made of vegetable fibers ** Toilet paper, tissue paper used for cleaning the anus ** Wrapping tissue, tissue paper used for wrapping and cushioning items Other * Aerial tissue Aerial silks (also known as aerial contortion, aerial ribbons, aerial tissues, fabric, ribbon, or ''tissu'') is a type of performance in which one or more artists perform aerial acrobatics while hanging from a specialist fabric. The fabric may b ..., an ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tissue Selection From Skin Excision With Lesion 9-15 Mm With Benign Appearance
Tissue may refer to: Biology * Tissue (biology), an ensemble of similar (or dissimilar in structure but same in origin) cells that together carry out a specific function * ''Triphosa haesitata'', a species of geometer moth ("tissue moth") found in North America * ''Triphosa dubitata'', a species of geometer moth ("tissue") found in Afro-Eurasia Paper products * Tissue paper, a type of thin, gauzy translucent paper used for wrapping and cushioning items ** Facial tissue, tissue paper used for cleaning the face ** Japanese tissue, tissue paper from Japan made of vegetable fibers ** Toilet paper, tissue paper used for cleaning the anus ** Wrapping tissue, tissue paper used for wrapping and cushioning items Other * Aerial tissue Aerial silks (also known as aerial contortion, aerial ribbons, aerial tissues, fabric, ribbon, or ''tissu'') is a type of performance in which one or more artists perform aerial acrobatics while hanging from a specialist fabric. The fabric may b ..., an ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tissue Selection From Skin Excision With Lesion 4-8 Mm With Benign Appearance
Tissue may refer to: Biology * Tissue (biology), an ensemble of similar (or dissimilar in structure but same in origin) cells that together carry out a specific function * ''Triphosa haesitata'', a species of geometer moth ("tissue moth") found in North America * ''Triphosa dubitata'', a species of geometer moth ("tissue") found in Afro-Eurasia Paper products * Tissue paper, a type of thin, gauzy translucent paper used for wrapping and cushioning items ** Facial tissue, tissue paper used for cleaning the face ** Japanese tissue, tissue paper from Japan made of vegetable fibers ** Toilet paper, tissue paper used for cleaning the anus ** Wrapping tissue, tissue paper used for wrapping and cushioning items Other * Aerial tissue Aerial silks (also known as aerial contortion, aerial ribbons, aerial tissues, fabric, ribbon, or ''tissu'') is a type of performance in which one or more artists perform aerial acrobatics while hanging from a specialist fabric. The fabric may b ..., an ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tissue Selection From Skin Excision With Lesion Less Than 4 Mm With Benign Appearance
Tissue may refer to: Biology * Tissue (biology), an ensemble of similar (or dissimilar in structure but same in origin) cells that together carry out a specific function * ''Triphosa haesitata'', a species of geometer moth ("tissue moth") found in North America * ''Triphosa dubitata'', a species of geometer moth ("tissue") found in Afro-Eurasia Paper products * Tissue paper, a type of thin, gauzy translucent paper used for wrapping and cushioning items ** Facial tissue, tissue paper used for cleaning the face ** Japanese tissue, tissue paper from Japan made of vegetable fibers ** Toilet paper, tissue paper used for cleaning the anus ** Wrapping tissue, tissue paper used for wrapping and cushioning items Other * Aerial tissue Aerial silks (also known as aerial contortion, aerial ribbons, aerial tissues, fabric, ribbon, or ''tissu'') is a type of performance in which one or more artists perform aerial acrobatics while hanging from a specialist fabric. The fabric may b ..., an ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gross Pathology
Gross pathology refers to macroscopic manifestations of disease in organs, tissues, and body cavities. The term is commonly used by anatomical pathologists to refer to diagnostically useful findings made during the gross examination portion of surgical specimen processing or an autopsy An autopsy (post-mortem examination, obduction, necropsy, or autopsia cadaverum) is a surgical procedure that consists of a thorough examination of a corpse by dissection to determine the cause, mode, and manner of death or to evaluate any di .... It is vital to systematically explain the gross appearance of a pathological state, for example, a malignant tumor, noting the site, size, shape, consistency, presence of a capsule and appearance on cut section whether well circumscribed or diffusely infiltrating, homogeneous or variegated, cystic, necrotic, hemorrhagic areas, as well as papillary projections. {{pathology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
False Positive
A false positive is an error in binary classification in which a test result incorrectly indicates the presence of a condition (such as a disease when the disease is not present), while a false negative is the opposite error, where the test result incorrectly indicates the absence of a condition when it is actually present. These are the two kinds of errors in a binary test, in contrast to the two kinds of correct result (a and a ). They are also known in medicine as a false positive (or false negative) diagnosis, and in statistical classification as a false positive (or false negative) error. In statistical hypothesis testing the analogous concepts are known as type I and type II errors, where a positive result corresponds to rejecting the null hypothesis, and a negative result corresponds to not rejecting the null hypothesis. The terms are often used interchangeably, but there are differences in detail and interpretation due to the differences between medical testing and statist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melanoma
Melanoma, also redundantly known as malignant melanoma, is a type of skin cancer that develops from the pigment-producing cells known as melanocytes. Melanomas typically occur in the skin, but may rarely occur in the mouth, intestines, or eye (uveal melanoma). In women, they most commonly occur on the legs, while in men, they most commonly occur on the back. About 25% of melanomas develop from moles. Changes in a mole that can indicate melanoma include an increase in size, irregular edges, change in color, itchiness, or skin breakdown. The primary cause of melanoma is ultraviolet light (UV) exposure in those with low levels of the skin pigment melanin. The UV light may be from the sun or other sources, such as tanning devices. Those with many moles, a history of affected family members, and poor immune function are at greater risk. A number of rare genetic conditions, such as xeroderma pigmentosum, also increase the risk. Diagnosis is by biopsy and analysis of any skin lesion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surgical Margin
A resection margin or surgical margin is the margin of apparently non-tumorous tissue around a tumor that has been surgically removed, called " resected", in surgical oncology. The resection is an attempt to remove a cancer tumor so that no portion of the malignant growth extends past the edges or margin of the removed tumor and surrounding tissue. These are retained after the surgery and examined microscopically by a pathologist to see if the margin is indeed free from tumor cells. If cancerous cells are found at the edges the operation is much less likely to achieve the desired results. Residual tumour at the primary site after treatment (it does not address the surgical margin as commonly believed) is classified by the pathologist as (AJCC 8th Edition): * R0 - no cancer cells seen microscopically at the primary tumour site. * R1 - cancer cells present microscopically at the primary tumour site. * R2 - Macroscopic residual tumour at primary cancer site or regional lymph nodes. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wide Local Excision
A wide local excision (WLE) is a surgical procedure to remove a small area of diseased or problematic tissue with a margin of normal tissue. This procedure is commonly performed on the breast and to skin lesions, but can be used on any area of the body. The tissue removed is examined under a microscope to confirm the type of lesion and to grade malignant tumours. This examination also determines if all of the lesion has been removed without leaving any behind. The results of a WLE will determine any future treatments if needed. Wide local excision of the breast A wide local excision of the breast aims to remove benign and malignant lesions while conserving the normal shape of the breast as much as possible. It is a form of breast-conserving surgery. A WLE can only be used for lesions up to 4 cm in diameter, as removal of any larger lesions could leave a visibly dented area in the breast. The extent of excision is variable, ranging from lumpectomy to quadrantectomy. A larger excisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dermis
The dermis or corium is a layer of skin between the epidermis (with which it makes up the cutis) and subcutaneous tissues, that primarily consists of dense irregular connective tissue and cushions the body from stress and strain. It is divided into two layers, the superficial area adjacent to the epidermis called the papillary region and a deep thicker area known as the reticular dermis.James, William; Berger, Timothy; Elston, Dirk (2005). ''Andrews' Diseases of the Skin: Clinical Dermatology'' (10th ed.). Saunders. Pages 1, 11–12. . The dermis is tightly connected to the epidermis through a basement membrane. Structural components of the dermis are collagen, elastic fibers, and extrafibrillar matrix.Marks, James G; Miller, Jeffery (2006). ''Lookingbill and Marks' Principles of Dermatology'' (4th ed.). Elsevier Inc. Page 8–9. . It also contains mechanoreceptors that provide the sense of touch and thermoreceptors that provide the sense of heat. In addition, hair follicles, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
