Genetic disorders affecting bone development and structure
Обяснение
Hereditary bone lesions are genetic disorders that affect bone development, structure, and function, often inherited and characterized by specific clinical and radiographic features.
Streptococci
Обяснение
The content states that osteomyelitis is often caused by bacteria such as streptococci and anaerobes. Among the options, streptococci are explicitly mentioned as common causative agents of osteomyelitis, making it the correct answer.
To cause abnormal tissue proliferation and potential destruction of bone tissue
Обяснение
The primary role or function of neoplastic bone diseases is to cause abnormal tissue proliferation, which can lead to the formation of benign or malignant tumors within the bone, often resulting in destruction or deformity of bone tissue.
Initial bacterial infection of bone
Обяснение
The initial bacterial infection of the bone occurs first in osteomyelitis. Following infection, the body's response leads to the formation of a sequestrum, which is dead bone separated from healthy tissue. The involucrum, or new bone formation around the sequestrum, develops later as part of the chronic process. Therefore, the correct chronological order begins with infection, then sequestrum formation, and finally involucrum development.
Cherubism is hereditary and bilateral, typically presenting in children, whereas central giant cell granuloma is usually sporadic and can be unilateral or bilateral.
Обяснение
Cherubism is a hereditary, familial condition presenting in children with bilateral jaw expansion, whereas central giant cell granuloma is typically sporadic, can be unilocular or multilocular, and is not inherited. This distinction in etiology and presentation is fundamental in diagnosis and management.
William Macdonald
Обяснение
William Macdonald is credited with early detailed descriptions and formulation of osteogenesis imperfecta as a distinct clinical entity. The other options are notable scientists but are associated with microbiology, radioactivity, and antibiotics, respectively, not bone diseases.
Bone resorption resulting in osteitis fibrosa cystica
Обяснение
Hyperparathyroidism causes excess parathyroid hormone, which stimulates osteoclasts, leading to increased bone resorption. This results in osteitis fibrosa cystica, characterized by weakened, deformed bones. The other options are incorrect: increased bone formation and mineralization are not typical effects of hyperparathyroidism; instead, it causes bone loss.
Recommend vitamin D supplementation and dietary counseling
Обяснение
The best way to prevent rickets in children at risk is through vitamin D supplementation and dietary counseling to ensure adequate intake of vitamin D, calcium, and phosphate, as supported by the course content on nutritional bone diseases.
Bilateral, symmetrical expansion of the jaw bones with multilocular radiolucencies crossing the midline
Обяснение
Cherubism is characterized by bilateral, symmetrical expansion of the jaw bones with multilocular radiolucencies crossing the midline, giving a 'cherubic' facial appearance, which distinguishes it from other jaw lesions.
A non-neoplastic intraosseous lesion characterized by multinucleated giant cells in a fibrous stroma
Обяснение
A central giant cell lesion is a non-neoplastic intraosseous lesion characterized histologically by multinucleated giant cells within a fibrous connective tissue stroma. It often presents as a multilocular radiolucency crossing the midline in the jaw bones.
Sequestrum
Обяснение
The correct answer is 'Sequestrum', which is defined as dead, necrotic bone that is separated from healthy bone during osteomyelitis, as explicitly described in the content.
It is a pathological consequence indicating impaired healing and necrosis of irradiated bone.
Обяснение
Osteoradionecrosis is a pathological consequence of radiation therapy, characterized by necrosis and non-healing of irradiated bone, indicating impaired healing and tissue death due to radiation-induced vascular damage.
Запомнете отговорите с 24 флашкарти по Bone Pathology: Hereditary to Inflammatory.
Hereditary bone lesions — definition?
Genetic disorders affecting bone structure or growth.
Osteogenesis imperfecta — key feature?
Fragile bones with frequent fractures.
Osteopetrosis — cause?
Defective osteoclast-mediated bone resorption.
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