ABSTRACT Colorectal cancer is the third most common neoplasm and the second most lethal worldwide. The most common histological type is adenocarcinoma, characterized by its glandular pattern. Medullary colon carcinoma is a rare histological variant of colorectal cancer, characterized by a predominantly solid architecture, poorly differentiated or undifferentiated morphology, often...
ABSTRACT Introduction: Urothelial carcinoma, especially localized bladder cancer, has a substantial prevalence in Brazil with 9,480 new cases each year and 3,903 deaths, therefore progress is required in its management in order to decrease its recurrence and progression, and improve survival. Material and Methods: Medical oncologists, radiation oncologists, and urologists from Brazil...
ABSTRACT Merkel cell carcinomas are rare cutaneous malignancies with neuroendocrine features that affect elderly individuals with a history of chronic sun exposure and immunosuppression. More recently, a human viral pathogen, the Merkel cell polyomavirus, has been implicated in the carcinogenesis of this disease. Its particularly aggressive biological behavior, the delay...
ABSTRACT NUT carcinoma (midline testicular carcinoma nuclear protein) is a relatively new, rare, aggressive and underdiagnosed entity. Its sites of involvement are medial structures of the head and neck and mediastinum, but other sites may be affected, and even in so-called common structures, the clinical course may impress. The objective...
ABSTRACT A 64-year-old female patient with uncompensated fever and secretive cough, an active smoker with a history of tuberculosis treated irregularly, developed non-small cell lung cancer such as squamous cell carcinoma in the pulmonary cavernoma.
ABSTRACT The diagnosis of cervical mass is a challenge due to the wide variety of benign and malignant etiologies. Extrapulmonary small cell carcinomas (EPSCC) are rare entities, and those tumours arising as a primary cervical, especially in the thyroid gland, are exceedingly rare. As others small cell neuroendocrine carcinomas, the...
