PMC5767994_01
Preoperative upper lip
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F1
On extraoral examination, the upper lip was swollen and soft in consistency [Figure 1].
Preoperative diffuse swelling of maxillary anterior gingiva
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F2
Intraoral examination showed a grade II gingival enlargement in relation to the labial aspect of maxillary anteriors [Figure 2].
(a) Hematoxylin and eosin stained section showing numerous plasma cell infiltrations in connective tissue stroma (x10); (b) Hematoxylin and eosin stained section showing numerous plasma cell infiltrations in connective tissue stroma (x40)
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F3
The connective tissue exhibited dense chronic inflammatory cell infiltrate comprised predominantly of plasma cells [Figure 3a and b].
Immunohistochemistry stained section showing Kappa (brown) and lambda (red)
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F4
Immunohistochemistry (IHC) evaluation showed biclonal expression of kappa and lambda with marginal overexpression of kappa [Figure 4].
Postoperative maxillary anterior gingiva
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F5
The surgical site healed uneventfully and a near normal appearance of the lip and gingiva [Figure 5] was seen after six weeks.