{
 "serie": "s601_T1W_aTSE",
 "n_imgs": 24,
 "s": 82.3,
 "respuesta": "**Right ankle MRI – T1-weighted sagittal series only (limited for edema/fluid-sensitive abnormalities).**\n\n## Abnormal / suspicious findings\n\n1. **Talar dome osteochondral/subchondral abnormality**\n   - **Location:** Central to medial talar dome / tibiotalar articular surface.\n   - **Description:** Subtle focal subchondral low T1 signal and mild articular surface irregularity, suspicious for a small osteochondral lesion. No obvious displaced osteochondral fragment or talar dome collapse on this series.\n   - **Confidence:** **Medium-low** — T1-only assessment limits confidence; would correlate with fluid-sensitive/cartilage sequences.\n\n2. **Possible middle subtalar facet abnormality / talocalcaneal coalition**\n   - **Location:** Medial subtalar joint region, likely middle facet/sustentacular region.\n   - **Description:** There appears to be focal narrowing/irregularity and partial loss of the normal subtalar joint cleft, raising suspicion for a talocalcaneal coalition or fibrocartilaginous bridging. No definite aggressive osseous lesion.\n   - **Confidence:** **Low to medium** — appearance is suspicious but not definitive on the provided slices alone.\n\n## Other structures\n\n- **Bones:** No displaced fracture or marrow-replacing lesion identified on T1. Distal tibial/fibular physes appear open/immature without obvious widening or displacement.\n- **Cartilage:** Tibiotalar cartilage is not well assessed on this T1 series; no gross diffuse joint space loss. Possible focal talar dome cartilage/subchondral abnormality as above.\n- **Ligaments:** Lateral ligaments, deltoid ligament, and syndesmotic ligaments are not optimally assessed on this sagittal T1 series. No gross ligament discontinuity is evident.\n- **Tendons:** Achilles tendon appears intact. Visualized flexor, extensor, and peroneal tendons are grossly intact without a definite tear on these images.\n- **Joint fluid:** No large tibiotalar or subtalar effusion visible on T1.\n- **Soft tissues:** No focal soft-tissue mass or obvious subcutaneous abnormality identified on this sequence."
}