scholarly journals The Relevance of Caseous Lymphadenitis as a Cause of Culling in Adult Sheep

Animals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1962
Author(s):  
Héctor Ruiz ◽  
Luis Miguel Ferrer ◽  
Juan José Ramos ◽  
Cristina Baselga ◽  
Oihane Alzuguren ◽  
...  
Keyword(s):  
Lymph Node ◽  
Respiratory System ◽  
Final Diagnosis ◽  
Caseous Lymphadenitis ◽  
Clinical Form ◽  
Retropharyngeal Lymph Node ◽  
Adult Sheep ◽  
Sheep Production ◽  
Veterinary Faculty ◽  
Concurrent Disease

Four hundred and ninety-eight culled sheep received at the Ruminant Clinical Service of the Veterinary Faculty of Zaragoza, Spain, were examined in life and after humanitarian sacrifice in order to reach the final diagnosis of the cause of culling and to evaluate the presence of caseous lymphadenitis (CLA) lesions. One hundred and forty-seven of the 498 studied animals (29.52%) showed CLA compatible lesions that were subsequently confirmed by Corynebacterium pseudotuberculosis isolation. One hundred and seven of the 147 CLA affected animals presenting the visceral clinical form of the disease (72.79%), while only 32 animals were affected by the superficial form (21.77%). In addition, eight animals were found to be affected in both the visceral and the superficial presentations (5.44%). Eighty-four of the 147 CLA-affected animals (57.14%) did not show any concurrent disease, considering, in this case, CLA the main cause of culling (84/498: 16.87%). In the superficial presentation, the retropharyngeal lymph node, as a sole lesion, was the most frequently affected (13/32: 40.63%). Further, in the visceral form of the disease, 85.06% of the affected animals had the lesions located in the respiratory system (91/107: 85.06%). CLA was revealed as an important cause of culling in sheep production.

scholarly journals PrPSc Is Not Detected in Peripheral Blood Leukocytes of Scrapie-Infected Sheep: Determining the Limit of Sensitivity by Immunohistochemistry

2002 ◽  
Vol 9 (2) ◽  
pp. 499-502 ◽  
Author(s):  
Lynn M. Herrmann ◽  
Timothy V. Baszler ◽  
Donald P. Knowles ◽  
William P. Cheevers
Keyword(s):  
Lymph Node ◽  
Peripheral Blood ◽  
Infected Sheep ◽  
Peripheral Blood Leukocytes ◽  
Retropharyngeal Lymph Node ◽  
Blood Leukocytes

ABSTRACT Peripheral blood leukocytes (PBLs) from scrapie-infected sheep were evaluated for the presence of PrPSc by using dissociated retropharyngeal lymph node (DRLN) cells and immunohistochemistry (IHC). PrPSc-positive cells were detected in 2.05% ± 0.28% of 3 × 106 DRLN cells, but were not detected in 3 × 106 PBLs from scrapie-infected sheep. Titration of DRLN cells mixed with PBLs showed that IHC detects a minimum of 0.00205% or 60 PrPSc-positive cells in 3 × 106 PBLs.

Effectiveness of superselective intra-arterial chemoradiotherapy targeting retropharyngeal lymph node metastasis

2016 ◽  
Vol 273 (10) ◽  
pp. 3331-3336 ◽  
Author(s):  
Takayoshi Suzuki ◽  
Tomohiro Sakashita ◽  
Akihiro Homma ◽  
Hiromitsu Hatakeyama ◽  
Satoshi Kano ◽  
...  
Keyword(s):  
Lymph Node ◽  
Lymph Node Metastasis ◽  
Retropharyngeal Lymph Node ◽  
Node Metastasis

Transoral Excision of a Retropharyngeal Lymph Node under Rigid Endoscopic Control

2010 ◽  
Vol 119 (4) ◽  
pp. 211-214 ◽  
Author(s):  
Laura Buttà ◽  
Davide Lombardi ◽  
Anna Marconi ◽  
Piero Nicolai
Keyword(s):  
Lymph Node ◽  
Retropharyngeal Lymph Node ◽  
Endoscopic Control

scholarly journals Low value of whole-body dual-modality [18f]fluorodeoxyglucose positron emission tomography/computed tomography in primary staging of stage I–II nasopharyngeal carcinoma: a nest case-control study

2021 ◽  
Author(s):  
Bei-Bei Xiao ◽  
Qiu-Yan Chen ◽  
Xue-Song Sun ◽  
Ji-Bin Li ◽  
Dong-hua Luo ◽  
...  
Keyword(s):  
Overall Survival ◽  
Lymph Node ◽  
Lymph Nodes ◽  
Stage I ◽  
Relapse Free Survival ◽  
Retropharyngeal Lymph Node ◽  
Free Survival ◽  
Pet Ct ◽  
Pre Treatment

Abstract Objectives The value of using PET/CT for staging of stage I–II NPC remains unclear. Hence, we aimed to investigate the survival benefit of PET/CT for staging of early-stage NPC before radical therapy. Methods A total of 1003 patients with pathologically confirmed NPC of stages I–II were consecutively enrolled. Among them, 218 patients underwent both PET/CT and conventional workup ([CWU], head-and-neck MRI, chest radiograph, liver ultrasound, bone scintigraphy) before treatment. The remaining 785 patients only underwent CWU. The standard of truth (SOT) for lymph node metastasis was defined by the change of size according to follow-up MRI. The diagnostic efficacies were compared in 218 patients who underwent both PET/CT and CWU. After covariate adjustment using propensity scoring, a cohort of 872 patients (218 with and 654 without pre-treatment PET/CT) was included. The primary outcome was overall survival based on intention to treat. Results Retropharyngeal lymph nodes were metastatic based on follow-up MRI in 79 cases. PET/CT was significantly less sensitive than MRI in detecting retropharyngeal lymph node lesions (72.2% [62.3–82.1] vs. 91.1% [84.8–97.4], p = 0.004). Neck lymph nodes were metastatic in 89 cases and PET/CT was more sensitive than MRI (96.6% [92.8–100.0] vs. 76.4% [67.6–85.2], p < 0.001). In the survival analyses, there was no association between pre-treatment PET/CT use and improved overall survival, progression-free survival, local relapse-free survival, regional relapse-free survival, and distant metastasis-free survival. Conclusions This study showed PET/CT is of little value for staging of stage I–II NPC patients at initial imaging. Key Points • PET/CT was more sensitive than MRI in detecting neck lymph node lesions whereas it was significantly less sensitive than MRI in detecting retropharyngeal lymph node lesions. • No association existed between pre-treatment PET/CT use and improved survival in stage I–II NPC patients.

scholarly journals Dysphagia following pharyngo-laryngectomy and free jejunal flap reconstruction with dissection of retropharyngeal lymph node

Toukeibu Gan ◽  
2020 ◽  
Vol 46 (4) ◽  
pp. 347-353
Author(s):  
Hiroki Ohnishi ◽  
Tadashi Yoshii ◽  
Shinji Otozai ◽  
Hironori Cho ◽  
Ryosuke Koike ◽  
...  
Keyword(s):  
Lymph Node ◽  
Flap Reconstruction ◽  
Retropharyngeal Lymph Node ◽  
Free Jejunal Flap
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