17-years girl with right inguinal lymphadenopathy.  
After a month of enlargement of lymph nodes (SONO: the biggest one 2 cm in diameter and few smaller, 1.3 cm) the cytology was performed and reactive hyperplasia was diagnosed. One month later the cytological finding was the same. Patient does not have any symptoms. Clinical and all laboratory exams are normal. Since lymph nodes did not regress the biopsy of the biggest lymph node was performed.  
Histologic and immunohistochemical analysis was suspicious for pediatric variant of follicular lymphoma. The study of clonality was also performed – IGH (BIOMED-2) and TCRB/TCRG; and the monoclonality of B cells (IgH regions FR1-JH; FR2-JH; FR3-JH; DH-JH) was cofirmed.  
I would be grateful for your opinion and support.