Discussion
Diagnosis With Brief Discussion
- Diagnosis
- Nodular lymphoid hyperplasia (NLH)
- Radiologic Findings
- Chest CT in 2015 demonstrates, multifocal round to oval shaped, peribronchial and subpleural ground glass opacities in both lungs. Follow-up chest CT after 1 year shows that the lesions have increased slightly. VATS for wedge resection was done. Immnumohistopathologic examination revealed follicular lymphoid hyperplasia with interfollicular lymphoplasmacytosis, consistent with nodular lymphoid hyperplasia (CD3, CD20: Positive, Kappa, Lambda: Focal positive, Bcl-2: Negative).
- Brief Review
- Nodular lymphoid hyperplasia (NLH) is a non-neoplastic primary lymphoid lesion of the lung. Reactive (non-neoplastic) lymphoid lesions of the lung could be classified based on the pattern of pulmonary involvement as follows: nodular lymphoid hyperplasia (focal); follicular bronchiolitis (peribronchial); lymphoid interstitial pneumonia (diffuse with pulmonary cyst). NHL was initially described by Saltzstein in 1963 and categorized by Kradin and Mark in 1983, and formerly referred to as pseudolymphoma. NHL shows histopathologic findings of localized infiltration of polyclonal lymphocytes (predominantly T cells). NLH is a nodular and well-circumscribed lymphoproliferative mass with a modest amount of fibrosis present between the lymph follicles. Germinal centers lack follicular colonization and are bcl-2-negative, indicating polyclonal and reactive proliferation Radiographic findings of NHL include nodule, mass, mass-like consolidation, or ground glass opacities (single or multiple). In the index case, there are multiple bilateral ground glass opacities on chest CT. The differential diagnosis includes primary pulmonary lymphoma and lung cancer.
- References
- 1. A Case of Pulmonary Nodular Lymphoid Hyperplasia with a Resected Cavity, followed by Spontaneous Regression of the Remaining Lesions, Inter Med 49: 1617-1621, 2010
2. Non-neoplastic pulmonary lymphoid lesions, Thorax 2001;56:964–971
3. Nodular lymphoid hyperplasia: rare case of lymphoproliferative disease in the lung, Gen Thorac Cardiovasc Surg (2009) 57:324–327
4. Follicular bronchiolitis: A Literature Review Journal of Clinical and Diagnostic Research. 2015 Sep, Vol-9(9): OE01-OE05
5. Primary pulmonary lymphoid lesions: Radiologic and pathologic findings RadioGraphics 2016; 36:53–70
- Keywords
- Lung, Lymphproliferative disorder,