Table 1.

The Scoring System used for pathological interpretation

Numerical value	Symbol	Histopathological description	Immunohistochemistry description
1	+	Small focal microgranuloma composed mainly of macrophages, lymphocytes and plasma cells	Very few (<5) stained cells
2	++	Non‐necrotic multifocal solid lesions	Small number (5 – 20) stained cells
3	+++	Focal or multifocal suppurative lesions with the presence of abundant neutrophils and small areas of necrosis	Moderate number (20–50) stained cells
4	++++	Multifocal lesion with severe necrosis	Abundant (>50) stained cells