IntroductionPrimary retroperitoneal mucinous cystadenoma is a rare tumor prevailing specifically in female gender. Its histogenesis is still unclear and its diagnosis is mainly based on morphological characteristics.Case presentationthe subject is a 44 years old man presenting an abdominal pain on the right side, with a palpable mass which appeared four months ago. Abdominal ultrasound (echography) revealed a retroperitoneal cystic process, which was successfully resected through laparotomy.Histopathological examination concluded to a mucinous cystadenoma with borderline malignancy foci.After a year of follow-up, no relapse was noticed in this patient.ConclusionRetroperitoneal mucinous cystadenoma is a rare tumor that should be considered in front of a retroperitoneal cystic process. Several hypotheses may explain the histogenesis of this pathological process.The interest in publishing this case report on primary retroperitoneal mucinous cystadenoma in a male patient lies in the rarity of occurrence of this syndrom in males as compared to females.
IntroductionThere are few case reports of thymoma with a thymic cyst. Such an association renders it difficult for any pathologist to differentiate from other neoplasms, such as a cystic thymoma.Case presentationA 50-year-old Berber woman from Morocco was admitted with a chronic cough of more than 10 years duration. Her medical history and physical examination were normal. Anterior chest radiography demonstrated a calcified opacity in her right anterior mediastinum. A chest-computed tomogram revealed a round cystic tumor, with significant calcification in her right anterior mediastinum. A surgical exploration was performed. The tumor seemed to be a well-encapsulated and totally calcified lesion, arising from the right lobe of her thymus. It was removed by partial resection of her thymus. Through histology, the calcified tumor exhibited some areas of multilocular fibrous-wall cysts. These cysts were partially lined by small cuboidal cells with severe chronic inflammation and an AB thymoma that arose from the wall of the cyst.ConclusionGreater attention should be given to multilocular thymic cysts, to exclude the possibility of neoplasm, especially when the cyst wall is thickened.
Les tumeurs pseudopapillaires et solides du pancréas (TPPSP) sont des tumeurs rares qui atteignent dans la plupart des cas des femmes jeunes. Leur pronostic est relativement favorable, avec un faible potentiel de malignité. Nous rapportons quatre nouvelles observations. Le but de ce travail était de rapporter, de préciser les caractéristiques anatomocliniqes de cette tumeur rare et de discuter son histogenèse. Matériel et méthode : Étude rétrospective ayant porté sur quatre patientes marocaines opérées entre janvier 2005 et janvier 2009. Les dossiers ont été identifiés dans une banque de données anatomopathologiques constituée rétrospective-ment. Une étude immunohistochimique a été réalisée dans tous les cas. Résultats : Il s'agissait de quatre femmes avec une médiane d'âge de 38 ans (15-69 ans). Une masse abdominale aux dépens du pancréas était le principal symptôme clinique. La taille tumorale était comprise entre 7 et 11 cm. Toutes les patientes ont bénéficié d'une résection chirurgicale sans aucun traitement adjuvant. Une complication sévère était survenue dans un cas. L'évolution était favorable chez nos quatre patientes, sans récidive, avec un recul moyen de 24,4 mois (6 et 48 mois). Conclusion : Les TPPSP sont des tumeurs rares qui présen-tent des caractéristiques clinicopathologiques distinctes. En dépit de diverses études, l'histogenèse reste indéterminée. Cette tumeur doit être distinguée d'autres tumeurs du pancréas, car son pronostic est excellent après résection chirurgicale complète. Mots clés Tumeur pseudopapillaire et solide · Pancréas · Anatomie pathologiqueAbstract Solid pseudopapillary tumours of the pancreas is a rare neoplasm, for the most part, affects young women and has a relatively favourable prognosis with a low malignant potential. We report 4 new cases. Our objective is to specify clinical and pathological characteristics of this rare neoplasm and to discuss its histogenesis. Methods: A retrospective review was considered on 4 Morrocan patients who had solid pseudopapillary tumours of the pancreas managed
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