| Etiological framework | N (%) | Specials | |
| Malignant hemopathies (26 patients) | Hodgkin’s disease | 5 (5.9) | Lymphocyte depletion: 1; Mixed cellularity: 1 Scleronodular: 2; Poppema nodular paragranuloma: 1 |
| Diffuse large cell lymphoma B | 4 (4.7) | 2 HIV field cases; 1 case with mediastinal lymph nodes; 1 case with serum localization | |
| T lymphoma | 1 (1.1) | Associated medullary location | |
| Burkitt lymphoma | 3 (3.5) | 1 case of Burkitt leukemia noted | |
| Lymphoide acute leukemia | 2 (2.3) | 2 younger cases; Diagnosis in the medullogram | |
| Myeloid acute leukemia type 1 | 2 (2.3) | ||
| Myeloid acute leukemia type 5 | 4 (4.7) | 2 cases Leukemia Myeloid Chronicle accused, 2 cases of Leukemia Acute Myeloid de novo | |
| Chronic lymphoblastic leukemia | 3 (3.5) | 1 case of splenic villous lymphoma, 1 prolymphocyte leukemia | |
| Myeloproliferative Syndrome | 1 (1.1) | Leukemia Myeloid Chronic acutization? | |
| Castleman’s Disease | 1 (1.1) | Suspicion/result of 2nd biopsy for confirmation not recovered | |
| Systemic diseases (10 patients) | Primary Sjögren Syndrome | 1 (1.1) | |
| Rheumatoid arthritis | 4 (4.7) | 1 case of Felty; 1 associated with 1 secondary Sjogren Syndrome; 2 isolated cases | |
| Lupus disease | 4 (4.7) | 1 case associated with 1 tuberculosis and 1 with Hodgkin’s lymphoma | |
| sarcoidosis | 1 (1.1) | Ganglionic and pulmonary localization | |
| Infections (34 patients) | Bacterial pyogenic lymphadenopathy | 3 (3.5) | Germs: staphylococcus aureus and haemolytic beta streptococcus, borrelia |
| Tuberculosis | 23 (27.3) | 15 cases multifocal tuberculosis, 4 associated with HIV, 1 scrofuloderm, 3 isolated | |
| HIV infection | 6 (7.1) | 2 cases HIV 1, 4 cases HIV 2, 4 cases stage IV WHO | |
| Lyme disease | 1 (1.1) | Borrelia, using thick gout | |
| toxoplasmosis | 1 (1.1) | Ganglionic and cerebral localization, positive toxoplasmic serology | |
| Solid neoplasms (7 patients) | Lymph node metastases | 7 (8.3) | Pancreas, CBP, gastric, prostatic, cavum, breast, esophagus, 2 suspected cases of malignancy with primary location not found, 2 cases of spinal cord metastases |
| Vascular causes (1) | Phlebitis | 1 | 1 patient with thrombophlebia of the right infant; Inguinal localization of ADPs |
| Histiocytosis (3) | LHAS | 3 (3.57) | 2 cases secondary to multifocal tuberculosis, 1 on pyomyositis |
| Causes not found in 3 patients |
| Biopsy and non-contributory immunohistochemistry for 2 patients, 1 death before exploration | |