ABSTRACT
Bone marrow infiltration by alveolar rhabdomyosarcoma is uncommon, some cases can mimicry acute leukemia at presentation and mislead the diagnosis. The integration of diagnostics tests and techniques in uncommon malignancies is important to suspect and reach the diagnosis and avoid delay on treatment. We report a case of alveolar rhabdomyosarcoma bone marrow infiltration associated with hemophagocytosis and cell cannibalism, mimicking acute leukemia at presentation.
ABSTRACT
La metaplasia escamosa descamativa queratinizante del tracto urinario es una enfermedad poco frecuente que puede simular un proceso neoplásico. Se presenta un ejemplo típico de esta entidad en una paciente de 71 años de edad con una larga historia de cólicos de repetición. El estudio radiológico mostró una lesión sospechosa, ocupante de espacio, en el muñón ureteral de una nefrectomía previa, y el examen histológico mostró metaplasia escamosa del urotelio y abundante descamación córnea en la luz formando masas irregulares(AU)
Keratinizing desquamative squamous metaplasia of the urinary tract is a rare condition that may mimic neoplasia. We report a characteristic case occurring in a 71-year old woman with a long previous history of recurrent nephritic colic. Imaging studies showed a suspicious mass in the ureteral stump of a previous nephrectomy. Histology revealed squamous metaplasia of the urothelium with abundant keratinizing material in the lumen forming irregular masses(AU)
