{
 "serie": "s3_Axial_PD_FS",
 "n_imgs": 24,
 "s": 87.4,
 "respuesta": "**Axial PD fat-suppressed right ankle MRI — abnormal findings visible on provided slices**\n\n| Structure / location | Finding | Confidence |\n|---|---|---|\n| **Tibiotalar joint** | **Moderate ankle joint effusion**, most conspicuous in the posterior recess and extending around the talar dome. Mild synovial/capsular hyperintensity suggests synovitis. | **High** |\n| **Posterior subtalar region / sinus tarsi region** | Small amount of fluid signal in the posterior subtalar joint/sinus tarsi region, possibly mild subtalar effusion/synovitis. | **Medium** |\n| **Anterolateral ankle / ATFL region** | The **anterior talofibular ligament is poorly defined/attenuated** rather than a discrete low-signal band, with adjacent fluid/synovial signal in the anterolateral gutter. Appearance is compatible with **chronic ATFL tear/sprain**, fitting the remote ankle sprain history. | **Medium–High** |\n| **Anterolateral gutter** | Ill-defined hyperintense soft tissue/fluid in the anterolateral recess, likely reactive synovitis/scarring; could contribute to anterolateral impingement symptoms. | **Medium** |\n| **Calcaneofibular ligament region** | CFL is not optimally assessed on axial images; visualized region appears mildly indistinct, without a clearly intact robust band. Possible chronic sprain/scarring, but not definitive on this series alone. | **Low–Medium** |\n| **Peroneal tendons, retromalleolar/inframalleolar course** | Mild fluid in the peroneal tendon sheath consistent with **mild peroneal tenosynovitis**. Peroneus brevis/longus tendons remain grossly intact on these slices; no definite split tear identified. | **Medium** |\n| **Flexor hallucis longus tendon sheath / posterior ankle** | Fluid extends along the FHL sheath/posterior ankle recess, likely related to the ankle effusion; mild FHL tenosynovitis cannot be excluded. Tendon itself appears intact. | **Medium** |\n| **Talar dome cartilage/subchondral bone** | Subtle suspected focal chondral/subchondral irregularity at the **medial to posteromedial talar dome** with mild adjacent fluid signal; possible small osteochondral/chondral lesion. No displaced fragment is seen on these axial images. | **Low–Medium** |\n| **Soft tissues** | Mild nonspecific periarticular/subcutaneous edema, greatest laterally around the ankle/hindfoot. | **Low–Medium** |\n\n**Structures that appear grossly intact/without definite abnormality on this axial series**\n\n- No acute fracture or diffuse marrow edema identified in the tibia, fibula, talus, calcaneus, or visualized midfoot bones.  \n- Achilles tendon appears intact.  \n- Posterior tibial, flexor digitorum longus, and extensor tendons appear grossly intact.  \n- Syndesmotic ligaments and posterior talofibular ligament appear grossly intact on the provided axial slices.  \n- Deltoid ligament complex shows no definite tear on these images."
}