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  Indian J Med Microbiol
 

Figure 1: Computed tomogram scan of head & neck, shows mass in right lobe of thyroid (a: arrow), multiple, bilateral cervical lymph nodes and right parapharyngeal mass (b: arrow). Thyroid fine needle aspiration cytology (FNAC) shows benign follicular cells (e: LG ×100) admixed with abnormal lymphoid cells (c: PAP ×100; d: PAP ×400; f: LG ×100; g: LG ×400). Cervical lymph node FNAC shows similar abnormal lymphoid cells (h: PAP ×400; i: LG ×400). Nasopharyngeal mass biopsy shows ulcerated (l: H and E, ×100) respiratory epithelium (j: H and E, ×100) and submucosal sheets of abnormal lymphoid cells (k and m: H and E, ×400), positive for Leucocyte common antigen (n: ×400), CD20 (o: ×400), CD3 and Pan-CK negative (q: ×100). CD3 positive in reactive lymphocytes (p: ×100). [LG: Leishman stain, PAP: Papanicolaou stain, H and E: Hematoxylin and Eosin stain]

Figure 1: Computed tomogram scan of head & neck, shows mass in right lobe of thyroid (a: arrow), multiple, bilateral cervical lymph nodes and right parapharyngeal mass (b: arrow). Thyroid fine needle aspiration cytology (FNAC) shows benign follicular cells (e: LG ×100) admixed with abnormal lymphoid cells (c: PAP ×100; d: PAP ×400; f: LG ×100; g: LG ×400). Cervical lymph node FNAC shows similar abnormal lymphoid cells (h: PAP ×400; i: LG ×400). Nasopharyngeal mass biopsy shows ulcerated (l: H and E, ×100) respiratory epithelium (j: H and E, ×100) and submucosal sheets of abnormal lymphoid cells (k and m: H and E, ×400), positive for Leucocyte common antigen (n: ×400), CD20 (o: ×400), CD3 and Pan-CK negative (q: ×100). CD3 positive in reactive lymphocytes (p: ×100). [LG: Leishman stain, PAP: Papanicolaou stain, H and E: Hematoxylin and Eosin stain]