A medical resident is reviewing classic radiologic patterns across various imaging modalities to prepare for independent practice. Match the following pathognomonic imaging findings with their corresponding underlying clinical diagnosis.
- Non-contrast CT Head: Isodense crescentic extra-axial fluid collection with medial displacement of the gray-white junction and sulcal effacement.Subacute subdural hematoma
- CT Abdomen/Pelvis with IV contrast: Twisting of the mesentery and superior mesenteric vein around the superior mesenteric artery ('whirlpool sign').Midgut volvulus
- High-Resolution CT (Chest): Centrilobular nodules connected to linear branching opacities forming a 'tree-in-bud' pattern in the upper lobes.Endobronchial tuberculosis
- MRI Lumbar Spine (T1-weighted with contrast): Focal enhancement of the intervertebral disc space with corresponding irregular destruction of the adjacent vertebral endplates.Discitis-osteomyelitis
- Transvaginal Ultrasound: Complex cystic adnexal mass containing a brightly echogenic nodule with strong posterior acoustic shadowing.Mature cystic teratoma
Cevap
The Non-contrast CT Head finding matches Subacute subdural hematoma; the CT Abdomen finding matches Midgut volvulus; the HRCT Chest finding matches Endobronchial tuberculosis; the MRI Spine finding matches Discitis-osteomyelitis; and the Transvaginal Ultrasound finding matches Mature cystic teratoma.
Each imaging finding represents a classic, pathognomonic presentation for a distinct clinical entity. The isodense crescent corresponds to a subacute subdural hematoma; the 'whirlpool sign' to a midgut volvulus; the 'tree-in-bud' pattern to endobronchial tuberculosis; disc enhancement with endplate destruction to discitis-osteomyelitis; and the echogenic nodule with shadowing to a mature cystic teratoma.
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Anahtar Kavram
Recognition of pathognomonic imaging signs across varied modalities is essential for the accurate and timely diagnosis of critical medical and surgical conditions.