Figure 4.

Case 16. (A) A 21‐year‐old female had a d2 pressure ulcer on her sacral region. The bar indicates the location of the ultrasonography probe. (B) Thermography indicated that the wound temperature was high in the greater part of the lesion and (C) ultrasonography showed an unclear layered structure, discontinuous fascia and heterogeneous hypoechoic area (white dashed circle) at the primary examination. (D) The wound worsened and was estimated as stage DU (stage D3 or worse) within 1 week, suggesting a deep tissue injury. Line a–b indicates the direction of the applied probe in panels (A) and (C).