Reaktif lenfadenopati

Özet

Reaktif lenfadenopati, enfeksiyon veya inflamasyona drene olan nodların bağışıklık yanıtı sırasında belirginleşmesidir. BT, nodların dağılımını ve olası primer odağı aynı anatomik alanda gösterir; ancak boyut ve kontrastlanma paterni tek başına reaktif nodu metastazdan güvenle ayırmaz. Bölgesel dağılım, çevre dokudaki inflamasyon ve uygun klinik bağlam benign açıklamayı güçlendirirken, atipik istasyonlar veya gerilemeyen nodlar yeniden değerlendirilmelidir. Nodları doğrudan primer odağa bağlamadan okumak metastatik hastalığı olduğundan fazla evreleyebilir; gerilemeyen şüpheli nodları reaktif saymak ise maligniteyi geciktirebilir.

Faz ve pencere

Venöz tanısal

Kontrastlı boyun BT'sinde nodların homojen yumuşak doku kontrastlanması, nodal zincire göre dağılımı ve çevre yağlı dokudaki inflamatuvar değişiklikler görülür; bu görünüm reaktif etiyolojiyi tek başına kanıtlamaz.

Önerilen pencereler: Yumuşak doku (G 400 / M 40), Mediasten (G 350 / M 50), Batın (G 400 / M 50).

BT bulguları

• Diş, tonsil veya farenks enfeksiyonuna drene olan üst servikal ve jugulodigastrik nodlarda bölgesel belirginleşme.
• Kontrastlı baş-boyun BT'sinde, enfeksiyon kaynaklı reaktif lenfadenopatiler çevresinde yumuşak doku ödemine ve inflamatuar değişikliklere rastlanır.
• Birden çok küçük nodun aynı drenaj zincirinde bulunması; ayrı anatomik istasyonlara yayılma yoksa bölgesel yanıtı destekler.
• Nod içinde nekroz veya sıvı atenüasyonu yerine çoğunlukla homojen yumuşak doku atenüasyonu görülür; merkezi düşük atenüasyon ya da nekroz metastaz veya apse için endişe vericidir.
• Reaktif nodlarda kısa/uzun eksen oranının <0.5 kalması, oval şekil ve hiperalkojenik hilumun korunması; metastazda beklenen hilum kaybı, yuvarlaklaşma ve eksantrik kortikal kalınlaşmadan ayrılır.
• Önceki incelemede nodların küçülmesi veya kaybolması reaktif süreci destekleyen zamansal değişimdir.

Normalde

Normal boyun görüntülerinde uzun ekseni kısa eksenden büyük, oval/kidney şeklinde ve hiperalkojenik kapak içeren küçük lenf nodları çevre yumuşak doku planları içinde belirgindir. Enfeksiyonlu örnekte aynı düzeyde nod sayısı ve çapı artarken tonsil çevresinde yumuşak doku ödemi ve yağ dokuda çizgilenme görülebilir; tek taraflı asimetriyi karşı tarafla kıyasla.

Ayırıcı tanı

Nodal metastaz

beklenen drenaj istasyonunda yuvarlaklaşma, kistik/nekrotik merkez veya düzensiz ekstranodal uzanım reaktif örüntüden ayrılır.

Lenfoma

birden fazla nodal bölgeyi tutan homojen nodal kitleler ve nodların birbirine yaslanarak konglomera oluşturması görülebilir.

Bakteriyel nodal apse

merkezde sıvılaşma, çevresel kontrastlanma ve komşu yağ dokuda belirgin inflamatuvar reaksiyon gösterir.

Tüberküloz lenfadeniti

merkezî düşük atenüasyon ve periferik kontrastlanma, bazen bitişik nodların konglomerasyonu ile seyreder.

Tuzaklar

• BT'de yağlı hilusun korunması her nodda güvenilir biçimde seçilmez; ultrason bulgusunu kontrastlı BT'de varmış gibi raporlama.
• Reaktif nodlar da büyüyebilir ve malign nodlar küçük kalabilir; boyut, klinik odak ve seri değişim birlikte ele alınmalıdır.
• Yalnızca aynı bölgedeki nod sayısının artışı malignite kanıtı değildir; diş, tonsil, cilt ve hava yolu enfeksiyonu odağını ara.

Kendini dene

1. Tonsillitli hastada aynı taraftaki üst servikal zincirde homojen oval nodlar ve komşu yağda hafif çizgilenme var. En olası yorum nedir?

   • Reaktif lenfadenopati
   • Kistik metastaz
   • Lenfoma
   • Tüberküloz lenfadeniti
   Cevabı göster

   Reaktif lenfadenopati. Nodların tonsil enfeksiyonunun drenaj zincirinde bulunması ve komşu inflamasyon bölgesel reaktif yanıtı destekler. Kistik metastazda sıvı merkezli nod, lenfomada çok istasyonlu kitle paterni, tüberkülozda ise nekrotik nodlar beklenebilir.

2. Enfeksiyon bulguları geriledikten sonra aynı zincirdeki nodların küçülmesi en çok hangi süreci destekler?

   • Reaktif yanıt
   • Lenfoma
   • Ekstranodal yayılım
   • Nodal apse
   Cevabı göster

   Reaktif yanıt. Primer inflamasyonla birlikte gerileyen nodlar geçici immün yanıtla uyumludur. Lenfoma çoğunlukla enfeksiyon odağından bağımsız kalıcı nodal yük oluşturur; ekstranodal yayılım ve apse de küçülen homojen nodları açıklamaz.

İlgili konular

• Lenf nodu metastazı

Kaynaklar

Bu sayfadaki 32 cümle ve 2 quiz sorusu aşağıdaki kaynaklardan alıntılarla tek tek karşılaştırıldı; 4 cümle bu karşılaştırmada düzeltildi (2026-10-09).

1. Oncologic Imaging of the Lymphatic System: Current Perspective with Multi-Modality Imaging and New Horizonpmc.ncbi.nlm.nih.gov
2. Cervical: Lymphadenopathypmc.ncbi.nlm.nih.gov
3. Peripheral Lymphadenopathy: Approach and Diagnostic Toolspmc.ncbi.nlm.nih.gov
4. Pelvic Inflammatory Disease: Multimodality Imaging Approach with Clinical-Pathologic Correlation.pubmed.ncbi.nlm.nih.gov
5. Evaluation and management of neck masses in children.pubmed.ncbi.nlm.nih.gov
6. Lymphadenopathy post-COVID-19 vaccination with increased FDG uptake may be falsely attributed to oncological disorders: A systematic review.pubmed.ncbi.nlm.nih.gov
7. Management of Unilateral Axillary Lymphadenopathy Detected on Breast MRI in the Era of COVID-19 Vaccination.pubmed.ncbi.nlm.nih.gov
8. Disseminated Kaposi Sarcoma.pubmed.ncbi.nlm.nih.gov
9. Lymphadenopathy after the third Covid-19 vaccine.pubmed.ncbi.nlm.nih.gov
10. COVID-19 Vaccination-Associated Lymphadenopathy on FDG PET/CT: Distinctive Features in Adenovirus-Vectored Vaccine.pubmed.ncbi.nlm.nih.gov
11. Frequency of Ipsilateral Axillary Lymphadenopathy After the Inactivated COVID-19 Vaccine.pubmed.ncbi.nlm.nih.gov
12. COVID-19 vaccination and breast cancer surgery timing.pubmed.ncbi.nlm.nih.gov
13. Axillary Lymphadenopathy Associated With COVID-19 Vaccination: Updates and Recommendations.pubmed.ncbi.nlm.nih.gov
14. Lymphocyte-Rich Classical Hodgkin Lymphoma. A Case with Difficulty in Distinguishing from Nodular Lymphocyte-Predominant Hodgkin Lymphoma.pubmed.ncbi.nlm.nih.gov
15. Laparoscopic retroperitoneal/mesenteric lymph node sampling: a safe and effective technique.pubmed.ncbi.nlm.nih.gov
16. Dasatinib associated lymphadenopathy in a chronic myeloid leukemia patient: A case report.pubmed.ncbi.nlm.nih.gov
17. The incidence and duration of COVID-19 vaccine-related reactive lymphadenopathy on 18 F-FDG PET-CT.pubmed.ncbi.nlm.nih.gov
18. Unusual Hemodynamic Presentation of Pediatric Kikuchi-Fujimoto Disease: Persistent Sinus Bradycardia and Vasopressor-Dependent Hypotension.pubmed.ncbi.nlm.nih.gov
19. EBUS-guided Cryobiopsy-Proven Anthracotic Mediastinal Lymph Node Mimicking Malignancy on FDG PET-CT: A Case Report.pubmed.ncbi.nlm.nih.gov
20. Histiocytic necrotizing lymphadenitis with central nervous system involvement in children: An analysis of clinical features.pubmed.ncbi.nlm.nih.gov
21. Metastatic Carotid Body Paraganglioma Following Three Decades of Indolent Growth: A Case Report.pubmed.ncbi.nlm.nih.gov
22. Gut microbiota profiles in reactive and metastatic lymphadenopathy in colorectal cancer: a tumor location-stratified analysis.pubmed.ncbi.nlm.nih.gov
23. Multiparametric MRI Assessment of Cervical Lymphadenopathy: Combined Diagnostic Performance of Morphological Features and Apparent Diffusion Coefficient.pubmed.ncbi.nlm.nih.gov
24. A diagnostic pitfall on cervical ultrasound: Lipoplastic lymphadenopathy mimicking malignancy.pubmed.ncbi.nlm.nih.gov
25. A Fibroblast Activation Protein Inhibitor (FAPI)-Avid Gastric Antral Mass Mimicking Advanced Gastric Cancer: A Case of Presumed Inflamed Gastric Ectopic Pancreas.pubmed.ncbi.nlm.nih.gov
26. Simultaneous DOTATATE uptake in three non-neuroendocrine pathologies: Follicular lymphoma, Crohn's disease, and vertebral hemangioma.pubmed.ncbi.nlm.nih.gov
27. Low-grade Central Osteosarcoma with High-grade Transformation in the Distal Tibia: A Rare Case Report.pubmed.ncbi.nlm.nih.gov
28. Disseminated Melanoma With Rare Multiorgan Visceral Involvement in a Young Adult: A Case Report.pubmed.ncbi.nlm.nih.gov
29. HIV Complicated with Talaromyces Marneffei Multisystem Infection: A Case Report and Literature Review.pubmed.ncbi.nlm.nih.gov
30. Tuberculosis revisted: classic imaging findings in childhood.pubmed.ncbi.nlm.nih.gov
31. Imaging of human papilloma virus associated oropharyngeal squamous cell carcinoma and its impact on diagnosis, prognostication, and response assessment.pubmed.ncbi.nlm.nih.gov
32. Lemierre Syndrome Following Dental Extraction: A Case Report.pubmed.ncbi.nlm.nih.gov
33. CT and MRI Key Features of Benign Tumors and Tumor-like Lesions of the Tongue: A Pictorial Review.pubmed.ncbi.nlm.nih.gov
34. Vector-Borne Zoonotic Lymphadenitis-The Causative Agents, Epidemiology, Diagnostic Approach, and Therapeutic Possibilities-An Overview.pubmed.ncbi.nlm.nih.gov
35. Computed Tomography Imaging Characteristics in the Diagnosis and Assessment of Cellulitis in Patients with Leg Swelling.pubmed.ncbi.nlm.nih.gov
36. Acute abdomen revealing abdominal tuberculosis complicated by a proximal jejunal perforation: Case report.pubmed.ncbi.nlm.nih.gov
37. Spectrum of [ 18 F]FDG-PET/CT Findings in Benign Lymph Node Pathology.pubmed.ncbi.nlm.nih.gov
38. Sequential imaging approach with lymphoscintigraphy and intraoperative indocyanine green lymphography for refractory chylous ascites in an infant: A case report.pubmed.ncbi.nlm.nih.gov
39. COVID-19 Vaccination and Pulmonary Nodules: A Narrative Review of Causality, Detection Bias and Thoracic Imaging Pitfalls.pubmed.ncbi.nlm.nih.gov
40. Treatment-Resistant Femoral Lymph Node Abscess Caused by Cat Scratch Disease: A Case Confirmed by Polymerase Chain Reaction.pubmed.ncbi.nlm.nih.gov
41. Seeing Angiogenesis: Multiparametric Ultrasound as a Non-Invasive Window into the Vascularization Status of Cervical Lymph Nodes in Head and Neck Squamous Cell Carcinoma.pubmed.ncbi.nlm.nih.gov
42. Necrotizing (Abscessing) Lymphadenopathy and the Diagnostic Value of Contrast-Enhanced Ultrasound (CEUS): A Review with Clinical Vignettes.pubmed.ncbi.nlm.nih.gov
43. Lymph Node Assessment with Multiparametric Ultrasound: Normal Values, Morphologic Patterns, and Diagnostic Algorithms.pubmed.ncbi.nlm.nih.gov
44. Follicular-Patterned Lesions of the Thyroid Gland.pubmed.ncbi.nlm.nih.gov
45. Tips and Tricks in Thoracic Radiology for Beginners: A Findings-Based Approach.pubmed.ncbi.nlm.nih.gov
46. Nonproliferative and Proliferative Lesions of the Rat and Mouse Hematolymphoid System.pubmed.ncbi.nlm.nih.gov
47. Longitudinal Mediastinal Lymph Node Dynamics Associate With Mortality and Fibrosis Progression in Fibrotic Interstitial Lung Disease.pubmed.ncbi.nlm.nih.gov
48. Diagnostic value of high-frame-rate contrast-enhanced ultrasound and nomogram model in lymphomas.pubmed.ncbi.nlm.nih.gov
49. Surgical Parapharyngeal Space Tumor Analysis with Case Series Study.pubmed.ncbi.nlm.nih.gov
50. Imaging for Pediatric Head and Neck Emergencies: Critical Insights.pubmed.ncbi.nlm.nih.gov
51. ESR Essentials: acute infections of the head and neck-practice recommendations by the European Society of Head and Neck Radiology.pubmed.ncbi.nlm.nih.gov
52. Lymph Node Abscessation Secondary to Neoplasia in Two Dogs.pubmed.ncbi.nlm.nih.gov
53. Malignant lymph nodes of the head and neck: imaging pearls, pitfalls, and practical approach to reporting in the era of extranodal extension.pubmed.ncbi.nlm.nih.gov
54. Lymphadenopathy in Concurrent Head and Neck Malignancies.pubmed.ncbi.nlm.nih.gov
55. Hidden in plain sight: Extrapulmonary manifestations of tuberculosis in Asia.pubmed.ncbi.nlm.nih.gov
56. Cat at home? Cat scratch disease with atypical presentations and aggressive radiological findings mimicking sarcoma, a potential diagnostic pitfall.pubmed.ncbi.nlm.nih.gov
57. Cat Scratch Disease-A Benign Disease with Thymic Hyperplasia Mimicking Lymphoma.pubmed.ncbi.nlm.nih.gov
58. The silent pandemic in South Africa: Extra-pulmonary tuberculosis from head to heel.pubmed.ncbi.nlm.nih.gov
59. Endoscopic ultrasound in mediastinal tuberculosis.pubmed.ncbi.nlm.nih.gov
60. Spectral Precision: The Added Value of Dual-Energy CT for Axillary Lymph Node Characterization in Breast Cancer.pubmed.ncbi.nlm.nih.gov
61. Computer-assisted and image-guided surgery for surgical lymph-nodal staging of gynecologic cancer in the era of digital and robotic surgery: a review of current evidence.pubmed.ncbi.nlm.nih.gov
62. Perioperative CALLY dynamics after curative gastrectomy for gastric adenocarcinoma: associations with nodal tumor burden, textbook surgical outcome, and disease-free survival.pubmed.ncbi.nlm.nih.gov
63. Standardizing pCR/MPR Assessment in NSCLC After Neoadjuvant Therapy: Challenges and Perspectives.pubmed.ncbi.nlm.nih.gov
64. Intraoperative Ex Vivo Shear-Wave Elastography of Sentinel Lymph Nodes in Endometrial Cancer and Other Gynaecological Malignancies.pubmed.ncbi.nlm.nih.gov
65. Same-Slide Spatial Multiomics Integration with IN-DEPTH Reveals Tumor Virus-Linked Spatial Reorganization of the Tumor Microenvironment.pubmed.ncbi.nlm.nih.gov
66. Special Issue: EACR 2026 Congress: Innovative Cancer Science, 8-11 June 2026.pubmed.ncbi.nlm.nih.gov
67. Recent advancements in artificial intelligence-powered cancer prediction from oral microbiome.pubmed.ncbi.nlm.nih.gov
68. Concomitant Pulmonary and Tonsillar Tuberculosis.pubmed.ncbi.nlm.nih.gov
69. Tonsillar Post-transplant Lymphoproliferative Disorder Presenting With Hemoptysis After Heart Transplantation: A Case Report and Review of the Literature.pubmed.ncbi.nlm.nih.gov
70. Case Report: Synchronous lingual osseous choristoma and suprahyoid thyroglossal duct cyst: insights into the embryological thyroglossal-hyoid axis.pubmed.ncbi.nlm.nih.gov
71. Incidentally Discovered Ovarian Cancer Combined With Obturator Nerve Schwannoma: A Rare Case Report.pubmed.ncbi.nlm.nih.gov
72. The Central Role of Imaging in Renal Cell Carcinoma: A Comprehensive Review of Tumor Aggressiveness, Histology, and Radiomics.pubmed.ncbi.nlm.nih.gov
73. Parapharyngeal Schwannoma: Limitations Regarding Diagnosis and Surgical Intervention-A Case Report and Focused Literature Review.pubmed.ncbi.nlm.nih.gov
74. Excision of a Giant Bilobed Second Branchial Cleft Cyst: A Case Report.pubmed.ncbi.nlm.nih.gov
75. Pre-treatment and post-treatment nasopharyngeal carcinoma imaging: imaging updates, pearls and pitfalls.pubmed.ncbi.nlm.nih.gov
76. Human biomarker navigator.pubmed.ncbi.nlm.nih.gov
77. New insights into imaging of pulmonary metastases from extra-thoracic neoplasms.pubmed.ncbi.nlm.nih.gov
78. China Anti-Cancer Association Guidelines for the diagnosis, treatment, and follow-up of thymic epithelial tumors (2023).pubmed.ncbi.nlm.nih.gov
79. Kikuchi-Fujimoto Disease in Pregnancy: A Rare Case With Atypical Presentation and Potential Viral Trigger.pubmed.ncbi.nlm.nih.gov
80. Corticosteroid-responsive portal lymphadenopathy mimicking malignant progression induced by furmonertinib in EGFR-mutated NSCLC: a case report.pubmed.ncbi.nlm.nih.gov
81. Migratory Pulmonary Infiltrates Mimicking Malignancy, Tuberculosis, and Sarcoidosis in an Apparently Immunocompetent Adult: A Case of Tissue-Proven Invasive Fungal Disease Due to a Non-<i>marneffei</i><i>Penicillium</i> Species.pubmed.ncbi.nlm.nih.gov
82. Sustained Regression of Parotid Mucosa-Associated Lymphoid Tissue (MALT) Lymphoma After Nutritional and Nutraceutical Intervention Without Chemoimmunotherapy: A Case Report.pubmed.ncbi.nlm.nih.gov
83. Differentiating lymphoma progression from benign lesions: features of incident [¹⁸F]FDG-avid foci on interim and end-of-treatment PET/CT.pubmed.ncbi.nlm.nih.gov
84. Neurolymphomatosis: A Comprehensive Review of Clinical and Imaging Features.pubmed.ncbi.nlm.nih.gov
85. Evaluation of Lymphadenopathy in Urgent Care: A Case of Hodgkin Lymphoma.pubmed.ncbi.nlm.nih.gov
86. The Diagnostic Utility of Endobronchial Ultrasound-Guided Fine-Needle Aspiration Cytology (EBUS-FNAC) for Thoracic Lymphadenopathy: A Correlation Study With Radiological Findings.pubmed.ncbi.nlm.nih.gov
87. An Aggressive Neoplasm with Mixed Epithelial and Sarcoma-like Features, of Uncertain Primary Origin, Presenting as an Upper Lip Mass: A Case Report.pubmed.ncbi.nlm.nih.gov
88. Australian clinical practice guideline: diagnosis and treatment of idiopathic multicentric Castleman disease.pubmed.ncbi.nlm.nih.gov
89. Cervical lymph node metastases in thoracic esophageal cancer: a systematic review.pubmed.ncbi.nlm.nih.gov
90. Isolated Parotitis Following a Cheek Slap: A Case Report and Clinical Implications.pubmed.ncbi.nlm.nih.gov
91. Role of magnetic resonance in bowel pathologies: Beyond inflammatory bowel disease.pubmed.ncbi.nlm.nih.gov
92. A Case Report of Extrapulmonary Tuberculosis: A Potpourri of Imaging Manifestations.pubmed.ncbi.nlm.nih.gov

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