No abstract

Fluid collection surrounding breast implants, called seroma, is a frequent issue that has diverse etiologies. We describe a 48‐year‐old woman with an acute onset of bilateral breast swelling occurring 5 years after aesthetic surgery and 10 days after a second SARS‐CoV‐2 mRNA vaccine dose. At breast ultrasound, we found an abundant bilateral peri‐implant seroma. Our patient noticed symptom improvement 48 h after nonsteroidal anti‐inflammatory drug treatment, complete disappearance of symptoms after 10 days with seroma disappearance documented by ultrasound. We hypothesized a breast implant seroma as post‐SARS‐CoV‐2 mRNA vaccine side effect, as different other diagnosis had been excluded.

Subgaleal lipoma is a benign tumor of adipose tissue. It should be suspected when a semi-spherical avascular mass with well-defined margins, iso-or hyperechoic in most cases, with thin internal echogenic lines parallel to the long axis of the tumor, is observed between the galea aponeurosis and periosteum of the cranial bone. We report a series of cases of three patients who underwent surgical lesion excision and whose histopathological examination findings confirmed the diagnosis of lipoma. Main Teaching Point:The presence of long continuous echogenic lines within a lensshaped soft tissue mass located beneath the galea aponeurosis may suggest the diagnosis of subgaleal lipoma.

Tendons play a crucial role in the musculoskeletal system. In humans, tendon injuries, especially chronic tendinopathy, are very common and the patellar tendon is a frequent location for tendinopathy or injuries. The biomechanical characteristics of the patellar tendon, such as elasticity and stiffness, are of paramount importance and constitute major outcome measures in research studies. We aimed to assess whether the stiffness of the healthy ovine patellar tendon changes with age and weight in a population of normal animals. Sixty-eight ‘patella-patellar tendon-tibial tuberosity’ units from thirty-four Ile-de-France ewes of body mass 65 to 95 kg, euthanized for reasons other than musculoskeletal diseases, underwent a tensile test providing a measure of the tendon stiffness. Animals were sorted into three categories of age (1–2 yo, 3–5 yo, 6–10 yo). We found a positive but not significant correlation between age category and stiffness (r = 0.22, p = 0.27). There was a significantly positive correlation between weight and stiffness (r = 0.39, p = 0.04). In conclusion, the study characterized biomechanical properties of healthy tendons, provided useful reference values, and established the basis for future biomechanical tests on healing tendons in sheep. The most appropriate sheep population for those future studies would be non-overweight young adults presenting with no lameness.