Diagnosis of gastrointestinal stromal tumor in a 25-year-old female presenting as huge abdominal mass and mandibular metastasis on fine needle aspiration cytology

Abstract

Gastrointestinal stromal tumors (GISTs) are rare forms of mesenchymal tumors of the digestive tract. We present a case of 25-year-old female who presented with abdominal pain, vomiting and mandibular swelling. Buccal mucosa at the site of mandibular swelling was normal on histopathological examination. CT scan revealed a huge intra abdominal mass. Fine needle aspiration cytology (FNAC) was performed from the abdominal mass and mandibular swelling. It revealed similar morphology from both the sites, confirming metastasis of GIST to mandible. The highlight of this case was presentation of malignant GIST in a young female along with rare mandibular metastasis. Diagnosis by FNAC is rarely reported.