RESUMO
Intra-abdominal neoplasmatic testicular torsion is a very rare clinical condition, which is normally not considered during differential diagnosis of acute appendicitis. The above-mentioned is most often observed in patients after puberty, without any previous specific symptoms apart from the absence of the testis in the scrotum and inguinal canal or periodic pain in the right lower abdomen. The study presented a case of a 22-year old male patient who was admitted and operated with suspicion of acute appendicitis. During surgery we observed intra-abdominal testicular torsion, both the testis and appendix were excised. Postoperative histopathological results were as follows: seminoma of the testis and normal appendix. The study presented available data concerning the above-mentioned rare clinical condition, as well as principles of diagnosis and treatment.