Abstract

Granular cell tumor (GCT) or Abrikossoff's tumor is an uncommon neuro-derived tumor in which Schwann cells are found and express S-100 protein. Often, it is a benign lesion. Histopathologically, there are granular cell infiltrations through the entire dermis without necrosis which are periodic acid Schiff (PAS) stain positive and reactive with S-100. The aim of this study is the clinicopathological evaluation of GCT. In this paper, we described the experience of 6 patients with a GCT in different locations (4 cases in the skin and 2 cases in the mucosa), for example, a case with a tumor in the abdomen and a keloidal-like presentation with a highly sclerotic pattern (an uncommon pathological feature). Another case developed a lesion secondary to physical trauma. In one case, the presence of a lesion in the lower lip associated with actinic damage secondary to chronic sun exposure resulted in misdiagnosis with actinic cheilitis and squamous cell carcinoma. Histopathologically, there were granular cell infiltrations through the entire dermis without necrosis which are PAS-positive and reactive with S-100.

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