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The Merck Veterinary Manual is a reference manual of animal health care. It was first published by Merck & Co., Inc. in 1955. [1] It contains concise, thorough information on the diagnosis and treatment of disease in a wide variety of species. [2] The Manual is available as a book, published on a non-profit basis. [3]
Illustration of venereal granulomata on a dog's penis. A canine transmissible venereal tumor (CTVT), also known as a transmissible venereal tumor (TVT), canine transmissible venereal sarcoma (CTVS), sticker tumor and infectious sarcoma, is a histiocytic tumor of the external genitalia of the dog and other canines, and is transmitted from animal to animal during mating.
The Merck Manual of Patient Symptoms was a small printed reference summary of symptoms intended for medical students, physician assistants, and the like. The Merck Veterinary Manual, introduced in 1955, covers animal health care. The Merck Manual for Pet Health is a consumer, or pet owner, edition.
Canine histiocytoma cytology. A histiocytoma originates from epidermal Langerhans cells of antigen-presenting cell lineage. [4] Spontaneous regression is common in these tumors, and it is mediated by infiltration of CD8-expressing T cells followed by expression of Type 1 T helper cell cytokines (such as Interferon-gamma) and recruitment of antitumour effector cells.
Cytology of lymphoma in a dog. Biopsy of affected lymph nodes or organs confirms the diagnosis, although a needle aspiration of an affected lymph node can increase suspicion of the disease. X-rays, ultrasound and bone marrow biopsy reveal other locations of the cancer. There are now a range of blood tests that can be utilised to aid in the ...
Gastrointestinal Neoplasia from Merck Veterinary Manual' This page was last edited on 29 July 2023, at 18:34 (UTC). Text is available under the Creative Commons ...
However, there is a significant amount of discordance between veterinary pathologists in assigning grades to mast cell tumors due to imprecise criteria. [9] The disease is also staged according to the WHO system: Stage I - a single skin tumor with no spread to lymph nodes; Stage II - a single skin tumor with spread to lymph nodes in the ...
Cytology of an anal sac adenocarcinoma An anal sac adenocarcinoma is an uncommon and aggressive malignant tumor found in dogs that arises from the apocrine glandular tissue of anal sac . The disease exists in cats as well, but is much less common in that species. [ 1 ]