RESUMO
Despite the high prevalence of tuberculosis [TB] in developing countries, isolated pancreatic TB is rare and is usually seen in immunocompromised patients. It presents with non-specific signs and symptoms and may mimic malignancy both clinically and radiologically. Cytologic and histologic confirmation is required to establish the definitive diagnosis. We present a case of a 25-year-old male with a pancreatic mass and markedly elevated serum cancer antigen [CA] 19-9 levels raising the suspicion of malignancy but with a histopathologic picture of TB. This case suggests that clinicians should have a heightened suspicion of pancreatic TB when faced with discrete pancreatic lesions even though elevated tumor markers may indicate malignancy. It is important to perform appropriate diagnostic testing and initiate antitubercular therapy early
RESUMO
Rosai-Dorfman disease, also known as sinus histiocytosis with massive lymphadenopathy, is a benign indolent disorder, characterized by enlarged lymph nodes filled with histiocytes. Extranodal involvement is uncommon. The disease rarely affects the nose and paranasal sinuses. We report a case that presented with a right nasal mass, extending into all the paranasal sinuses and right orbit without any accompanying lymphadenopathy. Because of the absence of lymphadenopathy it posed a diagnostic challenge until the pathology was confirmed on histopathological examination