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The single most common cause of lymphadenopathy in the dog is primary lymphoid neoplasia (lymphoma) affecting the node. However, approximately one third of enlarged lymph nodes in one large series of dogs presenting with primary lymphadenopathy were not due to lymphoma 2. These differential diagnoses included: Reactive hyperplasia
- Michael J. Day, BSc, BVMS(Hons), PhD, Fasm, Decvp, MRC Path, Frcvs
Michael J. Day, BSc, BVMS(Hons), PhD, FASM, DECVP, MRC Path,...
- World Small Animal Veterinary Association World Congress Proceedings, 2004
The 29th Congress of the World Small Animal Veterinary...
- Michael J. Day, BSc, BVMS(Hons), PhD, Fasm, Decvp, MRC Path, Frcvs
The sublumbar lymph nodes (SLNs) include the medial iliac, internal iliac (previously termed hypogastric), and sacral. In the dog, the SLNs drain the perineal and pelvic regions, which include the reproductive organs, anus, rectum, colon, ureters, and lower urinary tract .
- Megan C Murphy, Martin Sullivan, Barbara J Gomes, Ada Kaczmarska, Gawain J C Hammond
- Can Vet J. 2020 Jul; 61(7): 749-756.
- 2020
- 2020/07
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May 28, 2016 · Symptoms. Causes. Diagnosis. Treatment. Recovery. Community. What is Lymph Node Inflammation (Lymphadenopathy)? Lymph nodes are an important part of your dog’s immune response. They belong to the lymphatic system, a circulatory network that produces and transports a white blood cell containing fluid called lymph.
- Peritoneum and Retroperitoneum
- Abdominal Lymph Nodes
- Summary
Normal Findings
Ultrasound examination of the peritoneal and retroperitoneal spaces involves evaluation of the falciform, mesenteric, and retroperitoneal fat as well as potential cavities within these areas for the presence of masses, gas, or fluid (Figure 1). Like the pleural space, the peritoneal space is a closed cavity with a serous mesothelial lining.1A scant amount of physiologic peritoneal effusion, typically not seen on ultrasonography, is normal; this effusion serves as a lubricant for the peritonea...
Effusions
Peritoneal effusions can be detected by the presence of anechoic fluid separating and/or surrounding normal abdominal structures (Figure 3). Peritoneal fluid accumulation in adult dogs and cats is considered abnormal. Peritoneal effusion should be evaluated with cytology as well as culture and antibiotic sensitivity testing if sepsis is suspected. Determining the type of effusion based on its echogenicity is problematic because ultrasound lacks specificity: anechoic effusions can be exudates...
Disseminated Abdominal Neoplasia
Peritoneal effusion in cats and dogs may be secondary to carcinomatosis. In cats, the common sites of primary neoplasia resulting in peritoneal invasion and involvement are the pancreas, liver, and intestinal tract.8 In dogs, sarcomatosis is most commonly secondary to ruptured splenic or hepatic hemangiosarcoma with peritoneal seeding9 (Figure 7).
Abdominal lymph nodes can be divided into the parietal nodes (periaortic, renal, medial iliac, internal iliac, and sacral) and visceral nodes (hepatic, splenic, gastric, pancreaticoduodenal, jejunal, ileocolic, and colic).3,4A number of abdominal lymph nodes are not routinely seen on ultrasonography. Abdominal lymph nodes vary dramatically in size ...
As in all cases of abdominal disease, increases or decreases in overall echogenicity are subjective, and sonographers must be familiar with how the peritoneal and retroperitoneal spaces and abdominal lymph nodes appear in normal dogs and cats when scanned with their machines. Severe enlargement of abdominal lymph nodes is usually an indicator of ne...
KEY POINTS. Evaluation of lymph nodes on diagnostic images of dogs and cats is critical in the evaluation of patients with cancer. Certain imaging characteristics may suggest lymph nodes are metastatic or neoplastic, but significant overlap exists between neoplastic and reactive or inflammatory lymph nodes.
Jul 23, 2023 · Key Takeaway. Sublumbar lymph nodes in dogs are crucial components of the immune system, responsible for filtering harmful substances from the body, producing immune cells and antibodies, and draining several key areas including the colon, rectum, reproductive organs, urinary bladder, and urethra.
Lymph node. Sentinel lymph node. Canine. Feline. Imaging. Key points. Introduction. The identification and evaluation of lymph nodes by diagnostic imaging is important for prognosis and determination of therapeutic options. Lymph node evaluation is most critical in oncology patients but is also important in infectious diseases.
