Torsion of wandering spleen: radiological findings.

Wandering spleen (or ectopic spleen) is a rare anomaly resulting from hyperlaxity or even absence of the ligaments that hold the spleen in its anatomical position. Although more frequently a congenital condition, it can also be acquired. Torsion of the vascular pedicle is its potential main complication with subsequent development of splenic infarct. In this paper we will describe the pathogenesis, clinical manifestations, treatment options and radiological findings which allow the diagnosis of this entity.

Four cases of solid pseudopapillary tumors of pancreas: imaging findings and pathological correlations.

OBJECTIVE: Solid pseudopapillary tumor of the pancreas (SPTP tumor) is a rare pancreatic neoplasm with low malignant potential, which usually affects female patients in the second or third decades of life. It is a non-functional, slow-growing neoplasm that very often reaches considerable size before the first symptoms appear. Symptomatology is frequently related to tumor size. Surgical excision is usually curative in most cases. Infrequently the tumor can appear in male patients or in aged women, which can make the diagnosis more difficult. Some patients develop liver metastases in the follow-up that can be resected. Our purpose is to review the radiological and pathological findings of SPTP with emphasis on these infrequent cases. SUBJECTS AND METHODS: The medical records and radiological findings of patients who underwent surgery for SPTP between 2000 and 2005 were retrospectively reviewed. Study eligibility required that patients had undergone surgical resection and that a SPTP had been pathologically proved. RESULTS: Four cases of solid pseudopapillary tumor of the pancreas were diagnosed and treated in our institution in the study period. Two of the patients, developed on follow-up liver metastases, and peritoneal, hepatic, and nodal metastases, respectively. CONCLUSION: Solid pseudopapillary tumors are well-encapsulated neoplasms that usually have a good prognosis after surgical excision. A malignant behavior is uncommon and in this case lymph node involvement, hepatic metastases and occasionally peritoneal invasion may also occur. Resection of liver metastases can prolong the long-term survival of the patients.

Quistes primarios mesentéricos y omentales: hallazgos en imagen / Mesenteric and omental primary cysts: image findings

Objetivos: Describir la apariencia radiológica de los diferentes subtipos histológicos de quistes omentales y mesentéricos: linfangioma, quistes de duplicación entérica, entéricos y mesoteliales y seudoquiste no pancreático. Material y método: La base de este estudio es la revisión clínica, radiológica y patológica de 13 casos de lesiones quísticas de omento o mesenterio (tres linfangiomas, un quiste de duplicación entérica, siete quistes mesoteliales y dos seudoquistes no pancreáticos) del archivo de nuestro departamento. Resultados: La distribución por sexos fue de nueve mujeres y cuatro varones. Los hallazgos clínicos dominantes fueron dolor y distensión abdominal. Se realizó ecografía (US) en ocho casos, radiografías abdominales en 10 y tomografía computarizada (TC) en 13. En los estudios de US y TC se demostró una gran lesión quística, multiloculada, y de pared fina en los linfangiomas; lesiones quísticas uniloculares de tamaño variable, y de pared fina, calcificada en dos casos, en los quistes mesoteliales. El quiste de duplicación fue unilocular, con nivel líquido en US, y de pared gruesa calcificada. Los seudoquistes no pancreáticos fueron lesiones de tamaño variable, heterogéneas, y con pared gruesa. Conclusiones: La US y la TC pueden determinar el origen mesentérico/omental, así como la naturaleza quística de una masa abdominal, lo que ayudará a reducir las posibilidades diagnósticas. Es importante recordar que algunas neoplasias malignas pueden mostrarse ocasionalmente como lesiones quísticas en los métodos de imagen (AU)