A 58-year-old woman presents with a palpable left breast mass. Vital signs show BP 128/82, HR 82, RR 16, temp 37°C, SpO2 98%. Mammography reveals a 2.3 cm irregular density with microcalcifications. Biopsy confirms invasive ductal carcinoma. Sentinel lymph node biopsy demonstrates metastatic disease within axillary nodes. Chest CT shows no distant metastases. She denies systemic symptoms. This pattern of initial lymph node spread is most characteristic of which tumor type in general?
- A)Leukemias spreading by direct implantation
- B)Carcinomas spreading through lymphaticsGABARITO
- C)Sarcomas spreading hematogenously
- D)Melanomas confined to the epidermis
- E)Gliomas seeding through cerebrospinal fluid only
Explicação
Carcinomas, which arise from epithelial tissue, typically metastasize first through lymphatic channels to regional lymph nodes. In contrast, sarcomas more often spread hematogenously, making lymphatic spread especially characteristic of invasive breast carcino... Ver explicação completa e trilha adaptativa →