A patient presents with severe pain in the upper arm after a fall. The affected area is swollen, and the patient is unable to move the arm without significant pain. Imaging studies reveal a malignant bone tumor in the humerus with a transverse break through the lesion. What is osteosarcoma?
A fracture of the bone
A type of bone infection
A malignant bone tumor
A benign bone tumor
The Correct Answer is C
Choice A reason: A fracture is a break in the bone, as seen in the patient, but osteosarcoma is the underlying tumor causing the pathological fracture. Defining osteosarcoma as a fracture ignores its neoplastic nature, making this incorrect.
Choice B reason: A bone infection, or osteomyelitis, involves bacterial or fungal invasion, causing pain and inflammation. Osteosarcoma is a primary bone cancer, not an infection, with distinct histopathological features, making this an incorrect definition.
Choice C reason: Osteosarcoma is a malignant bone tumor, typically arising in long bones like the humerus, often causing pain, swelling, and pathological fractures. This matches the patient’s imaging findings and clinical presentation, making this the correct definition.
Choice D reason: A benign bone tumor, like an osteoma, does not metastasize or cause aggressive destruction. Osteosarcoma’s malignant nature leads to local invasion and potential metastasis, as implied by the fracture, making this incorrect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Hemorrhagic stroke often causes headache and severe neurological deficits, not just sudden weakness. Ischemic stroke, from a clot, fits Isky’s sudden focal symptoms, so this is incorrect.
Choice B reason: Ischemic stroke, caused by arterial occlusion, presents with sudden weakness, numbness, and speech issues, as seen in Isky. Her risk factors (hypertension, diabetes, smoking) support this, making it correct.
Choice C reason: Transient ischemic attack resolves quickly, unlike Isky’s ongoing symptoms. Ischemic stroke causes persistent deficits, matching her presentation, so this is incorrect for the stroke type.
Choice D reason: Subarachnoid hemorrhage typically involves severe headache, not focal weakness. Ischemic stroke aligns with Isky’s sudden, unilateral symptoms, so this is incorrect for her condition.
Correct Answer is B
Explanation
Choice A reason: The nasal compartment refers to the nasal cavity, not specific colored areas. Paranasal sinuses are air-filled cavities around the nose, often highlighted in anatomical diagrams, making this an incorrect term for the described structures.
Choice B reason: Paranasal sinuses, including frontal, ethmoid, sphenoid, and maxillary sinuses, are air-filled cavities around the nasal cavity, often colored in anatomical images. This matches the question’s reference to colored areas, making it the correct term.
Choice C reason: Runny nose describes a symptom (rhinorrhea), not anatomical structures. The question refers to colored areas, likely in a diagram, which aligns with sinuses, not a clinical condition, making this an incorrect choice.
Choice D reason: Olfactory bulbs are neural structures for smell, located above the nasal cavity, not typically colored as distinct areas in sinus diagrams. Paranasal sinuses are the highlighted structures, making this an incorrect term for the described areas.
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