RESUMO
Rhabdomyosarcoma is a common soft tissue tumor in children but rare in adults. Alveolar rhabdomyosarcoma represents a subtype of rhabdomyosarcoma, extremely rare in adults, especially within the nasal cavities. Therapeutic protocols for adults are often based on those used in pediatric cases. We present the case of a 56-year-old female patient with a history of breast cancer who developed alveolar rhabdomyosarcoma of the nasal cavity, stage III, managed initially with chemotherapy resulting in partial response. Subsequently, the patient underwent concomitant chemoradiotherapy. The clinical course was marked by local remission with metastatic progression after 18 months. Alveolar rhabdomyosarcoma is uncommon in adults, and its therapeutic management remains non-standardized. However, it is typically based on initial chemotherapy followed by local treatment. Despite therapeutic advances, the prognosis remains poor.
RESUMO
Dermatomyositis (DM) is an inflammatory disease of striated muscles and skin that can occur sporadically or rarely be associated with malignancy, thereby serving as a potential clinical indicator or harbinger of underlying cancer. Knowing the pathognomonic, clinical, and biological features of DM plays a pivotal role in its recognition. Its correlation with nasopharyngeal carcinoma (NPC) is particularly prevalent in regions where the incidence of NPC is notably high, underscoring the intricate interplay between immune dysregulation and oncogenesis. Specially, in the context of patients previously treated for NPC, the emergence of DM raises the clinical suspicion of metastatic progression or recurrence of the cancer. Thus, early recognition of DM-associated paraneoplastic syndromes can facilitate prompt intervention and optimize patient outcomes. We present a case of metastatic progression in a patient treated for NPC, revealed by the pathognomonic, clinical, and biological signs of DM.
