#neoplasm

• Adenocancroid — A rare malignant tumor formation with a mixed structure, characterized by the simultaneous presence of adenocarcinoma (glandular) and epidermoid carcinoma (squamous) elements. This structural neoplastic form exhibits high biological aggressiveness and a rapid capacity for metastasis, requiring a complex therapeutic protocol based on surgery, chemotherapy, and radiotherapy.
• Adenochondroma — A benign tumor formation with a mixed histological structure, characterized by the simultaneous proliferation of epithelial glandular tissue and cartilaginous tissue. This structural benign neoplasm occurs most frequently within the salivary glands (particularly in pleomorphic adenomas) or the mammary gland, presenting a slow evolution and sharp demarcation from surrounding tissues.
• Adipofibroma — A benign tumor formation with a mixed histological structure, composed of a mixture of mature adipose tissue and proliferated fibrous connective tissue. This structural benign neoplasm occurs most frequently within the subcutaneous cellular tissue, internal organs, or the mediastinum, presenting a firm-elastic consistency and sharp demarcation from neighboring anatomical structures.
• Androblastoma — A rare androgen-secreting tumor located in the ovary (also known as a Sertoli-Leydig cell tumor) or testis, developing from the embryonic structures of primitive sex cords. Structurally, this neoplastic proliferation frequently induces clinical phenomena of virilization and secondary masculinization in female patients, requiring precise histopathological diagnosis and surgical excision.
• Arenoma — A benign or malignant tumor formation located within the adrenal cortex, structurally capable of secreting excess androgenic hormones; a virilizing adenoma or carcinoma. This neoplasm causes severe endocrine disorders clinically manifested through virilization syndrome, pronounced hirsutism, and secondary alterations of secondary sexual characteristics.
• Astroblastoma — A rare neuroepithelial brain tumor of glial origin, characterized by the abnormal proliferation of astroblasts (embryonic precursor cells of astrocytes). This type of neoplasm develops predominantly in the cerebral hemispheres of children and young adults, displaying on histological examination a characteristic arrangement of tumor cells in the form of perivascular rosettes or pseudorosettes, with cytoplasmic extensions anchored to the vessel walls.