Adrenal collision tumor: a case report of the coexistence of myelolipoma and ganglioneuroma.

Adrenal collision tumor (ACT), where distinct tumors can coexist and do not intermingle in the same adrenal gland, is rarely reported and its cause and prevalence are unclear. Few papers have reported a connection between myelolipoma and adrenal ganglioneuroma. Case Report: A 40-year-old man had a physical examination one month prior to surgery. Physical examination as well as the laboratory data involving endocrine studies showed normal findings. MRI (magnetic resonance imaging) revealed a mixed signal lesion in the right suprarenal fossa. A laparoscopic left adrenalectomy was conducted. Pathologic examination revealed two distinct tumors: myelolipoma and ganglioneuroma. Conclusion: The two kinds of tumors are rarely seen in the adrenal gland and they exceptionally exist as ACT only. This case should arouse our attention in future clinical work.