{
 "serie": "s701_DP_SPAIR_COR",
 "n_imgs": 24,
 "s": 31.4,
 "respuesta": "Based on the provided coronal DP SPAIR MRI slices of the right ankle, here is the radiological report detailing the findings:\n\n**1. Bones and Cartilage:**\n*   **Location:** Medial talar dome.\n*   **Description:** There is a distinct focal osteochondral lesion (OCL) located at the medial aspect of the talar dome (best seen on slices 7-10). It is characterized by a hyperintense subchondral cyst with surrounding reactive bone marrow edema. The overlying articular cartilage appears irregular and thinned, indicative of a chondral defect.\n*   **Confidence:** High.\n*   **Other Bones:** The visualized portions of the distal tibia (tibial plafond), lateral talar dome, and fibula appear unremarkable with no acute fractures or significant abnormal bone marrow signal.\n\n**2. Joint Fluid:**\n*   **Location:** Tibiotalar joint.\n*   **Description:** There is a small to moderate tibiotalar joint effusion, visible in both the medial and lateral gutters.\n*   **Confidence:** High.\n\n**3. Ligaments:**\n*   **Location:** Lateral collateral ligament complex.\n*   **Description:** The region of the lateral ligaments (such as the calcaneofibular ligament) shows some soft tissue thickening and ill-defined signal without a clear, continuous low-signal band. Given the clinical history of a remote ankle sprain, this is consistent with chronic post-traumatic scarring and thickening. No acute high-grade tear is evident on these coronal slices.\n*   **Confidence:** Medium.\n*   **Location:** Medial (Deltoid) ligament complex.\n*   **Description:** The deltoid ligament appears intact but mildly thickened, which may be a chronic reactive change.\n*   **Confidence:** Medium.\n\n**4. Tendons:**\n*   **Location:** Medial and lateral ankle.\n*   **Description:** The visualized portions of the medial flexor tendons (tibialis posterior, flexor digitorum longus, flexor hallucis longus) and the lateral peroneal tendons (longus and brevis) appear normal in caliber and signal intensity, with no evidence of tenosynovitis or tear.\n*   **Confidence:** High.\n\n**5. Soft Tissues:**\n*   **Location:** General.\n*   **Description:** The surrounding subcutaneous soft tissues appear largely unremarkable without significant acute edema.\n*   **Confidence:** High.\n\n**Summary of primary abnormal findings:**\nThe most significant finding is a focal **osteochondral lesion of the medial talar dome** with subchondral cystic change, surrounding bone marrow edema, and likely overlying cartilage defect, accompanied by a **tibiotalar joint effusion**. There are also signs of **chronic scarring of the lateral ligaments**, consistent with the patient's remote sprain history."
}