Benign diaphragmatic neurilemmoma mimicking a left adrenal cyst

Özet

Neurilemmomas are benign, slow growing, encapsulated nerve sheath tumor. These tumors arise from theschwann cells of neural crest. Neurilemmomas can manifest in various form according to site, extent andseverity of involvement of organ. Diaphragmatic neurilemmomas are very unusual and even difficult to diagnoseon preoperative imaging. We will report a case of 39 year old male, who presented with complaintsof occasional left flank pain for one year and subsequently investigated, which showed left adrenal cyst withhaemorrhagic fluid content. On the contrary, when surgical exploration of the lesion was done, it showeda cyst within the diaphragm, completely separated from left kidney and left adrenal with haemorrhagiccontent in situ. Histopathological examination of the lesion showed it to be a benign neurilemmoma withcystic degeneration. Post opearatively patient did well. We believe that this is the first case report, which isaddressing such kind of initial manifestation of diaphragmatic neurilemmomas.