TY - JOUR A1 - Karuna, Veer A1 - Gupta, Priya A1 - Gupta, Mamta A1 - Grover, Kriti T1 - Diagnostic issue and caveats of immunoreactivity for Ki67 in hyalinizing trabecular neoplasm with review of literature: A study of one case Y1 - 2018//1 JF - International Journal of Head and Neck Pathology JO - Int J Head Neck Pathol SP - 1 EP - 4 VL - 1 IS - 1 UR - https://www.ijhnp.org/article.asp?issn=2590-2997;year=2018;volume=1;issue=1;spage=1;epage=4;aulast=Karuna DO - 10.4103/JHNP.JHNP_6_18 N2 - Few benign and malignant thyroid lesions share many histological features including papillary and trabecular pattern, hyalinized stroma, calcification, nuclear grooving and nuclear inclusion. Well formalin fixed right lobe hemithyroidectomy specimen was received. After processing, H and E stain was done. Immunohistochemical studies (TTF, Thyroglobuline, MIB-1) and special stain (Congo red) were done to make a definite diagnosis. The present case describes a relatively rare thyroid tumour – Hyalinizing trabecular tumour with its varied morphological features creating diagnostic difficulties and role of IHC in formulating definitive diagnosis. ER -