<prompt> Progressive transformation of germinal centers PTGC is a precursor lesion of -Hodgkins lymphoma, nodular sclerosisHodgkins lymphoma, mixed cellularityHodgkins lymphoma, lymphocytic predominantPeripheral T cell lymphoma  <response>: Lymphocytic predominance contains lymphocytic and histiocytic L and H variant. Thesse variants express B cell markers typical of germinal centre B cells. The IgH genes of L and H variant show evidence of ongoing somatic hypermutation,a modification that occurs only in germinal centre B cells. In 3to5 of cases this type transforms in to a tumour resembling diffuse large B cell lymphoma. Reference; Robbins and Cotran Pathologic basis of disease.South Asia Edition volume 1.page no. 609,610 