{
 "serie": "s201_STIR_SAG",
 "n_imgs": 18,
 "s": 31.2,
 "respuesta": "Based on the provided sagittal STIR MRI slices of the right ankle, here is the radiological report detailing the findings:\n\n**Bones and Joints:**\n*   **Anterior Tibiotalar Joint (Anterior Impingement):** There are prominent osteophytes at the anterior margin of the tibial plafond and the dorsal aspect of the talar neck. There is marked, \"kissing\" bone marrow edema in the anterior distal tibia and the anterior talus directly adjacent to these osteophytes. Given the clinical history of a 2018 resection, these represent recurrent osteophytes with active anterior ankle impingement syndrome. **Confidence: High**\n*   **Tibiotalar Joint:** There is a moderate tibiotalar joint effusion. **Confidence: High**\n*   **Subtalar Joint:** There is a small to moderate subtalar joint effusion with mild reactive subchondral bone marrow edema, particularly near the posterior facet. **Confidence: High**\n*   **Talar Dome Cartilage:** The articular cartilage of the talar dome appears grossly intact on these sagittal slices, though evaluation is limited without other planes. The subchondral edema anteriorly is likely related to the aforementioned impingement. **Confidence: Medium**\n\n**Tendons:**\n*   **Peroneal Tendons (Lateral):** There is hyperintense fluid distending the common peroneal tendon sheath (visible on the lateral slices), consistent with tenosynovitis. **Confidence: High**\n*   **Tibialis Posterior Tendon (Medial):** There is fluid within the tibialis posterior tendon sheath (visible on the medial slices), consistent with tenosynovitis. **Confidence: High**\n*   **Achilles Tendon:** The Achilles tendon demonstrates normal thickness and low signal intensity throughout its visualized course, with no evidence of tendinopathy or tear. **Confidence: High**\n*   **Flexor Hallucis Longus (FHL):** A small amount of fluid is seen in the FHL tendon sheath, which may represent a physiologic communication with the joint effusion. **Confidence: Medium**\n\n**Ligaments and Soft Tissues:**\n*   **Sinus Tarsi:** There is hyperintense STIR signal replacing the normally suppressed fat within the sinus tarsi. This is suggestive of sinus tarsi syndrome, likely a sequela of the patient's remote ankle sprain. **Confidence: High**\n*   **Subcutaneous Soft Tissues:** There is diffuse subcutaneous edema surrounding the ankle, most prominent anterolaterally and medially. **Confidence: High**\n*   **Plantar Fascia:** The plantar fascia is of normal thickness and signal intensity at its calcaneal origin, with no signs of plantar fasciitis. **Confidence: High**"
}