Double Retroperitoneal Hydatid Localization: A Case Report

The hydatid cyst is a parasitic pathology which is endemic in Tunisia and presents a public health problem. Hydatid cysts located in the retroperitoneum, especially around or in the kidney, are rare and only represent 5% of visceral locations. The kidney is the most commonly affected organ of the urinary tract. The psoas muscle is an uncommon location and not less than 70 cases have been cited. We report the case of an unusual presentation of a right kidney hydatid cyst associated with a psoas muscle location. To our knowledge, this association of double retroperitoneal location has not been reported in the literature.

Primary monophasic breast synovial sarcoma in a female patient

Synovial sarcoma (SS) is a rare soft tissue sarcoma usually arising in the deep soft tissues of the limbs, trunk, and head and neck region. Due to its rarity, diagnosis can be difficult to establish, especially when it involves an uncommon location like the breast. In this case report, we describe a young woman who was found to have primary SS of the breast. Initial immunohistochemistry staining was focally positive for cytokeratin and S100 and she was misdiagnosed with atypical spindle cell carcinoma. Due to the unusual presentation, further testing was performed which showed TLE1 and epithelial membrane antigen positivity, establishing the diagnosis of SS of the breast. A FISH was later sent out and was positive for SS18-SSX fusion transcript. This case highlights the importance of considering rare histopathology in breast lesions and using additional staining and cytogenetics to confirm diagnosis.

Is HO-YAG Laser in Perianal Warts Safe in Children? A Report of 3 Cases

Verruca Vulgaris or wart is a common skin disease caused by human papillomavirus (HPV) infection. Warts are usually located on fingers, hands, elbows and feet. Anogenital region is an uncommon location for warts. Three children with large perianal warts were treated by holmium: Yttrium Aliminum Garnet (Ho-YAG) laser. No recurrences or significant complications were seen in 2 years of follow up period. Ho-YAG Laser was successfully applied in the treatment of pediatric perianal warts. It is a safe and effective method.