Non-pancreatic Pseudocyst Presenting as a Giant Retroperitoneal Mass

Objective: To assess the non-pancreatic retroperitoneal pseudocyst in the differenctial diagnosis of retroperitoneal cystic masses. Methods: To report a case. Results: We present a case of a 50-year-old woman with symptoms of pain and a palpable abdominal mass. In imaging studies a 13-cm retroperitoneal cystic mass with left ureterohydronephrosis was observed. Surgical excision of the mass was performed with pathological diagnosis of non-pancreatic retroperitoneal pseudocyst. Conclusion: Non-pancreatic retroperitoneal pseudocyst is an entity with a very low incidence, benign, usually asymptomatic. It can grow compressing on adjacent structures. The definitive diagnosis is histopathological and the treatment is surgical. It's important to carry out complete exeresis to avoid recurrences (AU)

Objetivo: Considerar el pseudoquiste retroperitonealno pancreático en el diagnóstico diferencial de masas quísticas retroperitoneales.Métodos: Presentación de un caso clínico.Resultados: Se presenta el caso de una mujer de 50años con dolor y masa abdominal palpable. En pruebasde imagen complementarias se objetiva una masa quísticaretroperitoneal de 13 cm que condiciona uréterohidronefrosis izquierda. Se realiza exéresis quirúrgica de la masa condiagnóstico anatomopatológico de pseudoquiste retroperitoneal no pancreático.Conclusión: El pseudoquiste retroperitoneal no pancreático es una entidad con una incidencia muy baja, benigna, habitualmente asintomática y que puede alcanzargran tamaño comprometiendo estructuras vecinas. El diagnóstico definitivo es anatomopatológico y el tratamiento esquirúrgico, siendo importante realizar la exéresis completapara evitar recurrencias (AU)

Breast-implant-associated anaplastic large-cell lymphoma.

Breast-implant-associated anaplastic large-cell lymphoma (BIA-ALCL) is an uncommon, recently recognized disease that seems to occur only in relation with implants with textured surfaces. Most cases present with late-onset peri-implant effusion or fluid collections that develop more than 12 months after insertion of the implant. The diagnosis is reached by cytological analysis of fluid samples obtained by ultrasound-guided fine-needle aspiration. These patients usually have a good prognosis after surgical removal of the implant. A small percentage of patients present with a nodule or mass adjacent to the implant that usually develops late. In these cases, the diagnosis is reached by the histological analysis of core-needle biopsy specimens. These patients have a worse prognosis and require a combination of surgery and systemic chemotherapy. The main immunophenotypic characteristics of this lymphoma are intense expression of CD30 and a lack of expression of anaplastic lymphoma kinase (ALK). Here we present a case of BIA-ALCL in a patient with implants with a textured surface that presented with peri-implant effusion and incipient formation of a millimetric nodule and was treated with removal of the implant and bilateral capsulectomy. It is important to point out that the disease requires multidisciplinary management and that the Spanish Agency of Medicines and Medical Devices (AEMPS) should be notified when the diagnosis is confirmed.

Breast-implant-associated anaplastic large-cell lymphoma. / Linfoma anaplásico de células grandes asociado a implantes mamarios.

Breast-implant-associated anaplastic large-cell lymphoma (BIA-ALCL) is an uncommon, recently recognized disease that seems to occur only in relation with implants with textured surfaces. Most cases present with late-onset peri-implant effusion or fluid collections that develop more than 12 months after insertion of the implant. The diagnosis is reached by cytological analysis of fluid samples obtained by ultrasound-guided fine-needle aspiration. These patients usually have a good prognosis after surgical removal of the implant. A small percentage of patients present with a nodule or mass adjacent to the implant that usually develops late. In these cases, the diagnosis is reached by the histological analysis of core-needle biopsy specimens. These patients have a worse prognosis and require a combination of surgery and systemic chemotherapy. The main immunophenotypic characteristics of this lymphoma are intense expression of CD30 and a lack of expression of anaplastic lymphoma kinase (ALK). Here we present a case of BIA-ALCL in a patient with implants with a textured surface that presented with peri-implant effusion and incipient formation of a millimetric nodule and was treated with removal of the implant and bilateral capsulectomy. It is important to point out that the disease requires multidisciplinary management and that the Spanish Agency of Medicines and Medical Devices (AEMPS) should be notified when the diagnosis is confirmed.