PMC10422967_01
Magnetic resonance imaging results. (A) Magnetic resonance imaging revealed the abscess in left psoas, gluteus maximus and iliac muscles (red arrow indicated), intermuscular encapsulated effusion, as well as enlarged lymph nodes in the left inguinal region. (B) Color Doppler ultrasound revealed a honeycomb, hypoechoic area in left Hip.
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Magnetic resonance imaging (MRI) revealed the bilateral avascular necrosis of the femoral head, abscess in the left psoas, gluteus maximus, and iliac muscles, intermuscular encapsulated effusion, as well as enlarged lymph nodes in the left inguinal region (Figure 1A), raising the suspicion of infection. On the 4-day of hospitalization, the Color Doppler ultrasound demonstrated a subcutaneous, honeycomb, hypoechoic area (176mm x 33mm x 136mm; Figure 1B), which confirmed an abscess in the left hip.
Morphological results of the pus culture. (A) Sabouraud dextrose agar medium showed the white-greyish, cottonlike colonies. (B and C) The thin, septate branching hyphae were observed on Columbia blood agar plate. (D) The lacto-phenol cotton blue staining showed the thick mycelium, along with the production of terminal oval conidia and a brush of cylindrical conidia (400x magnification).
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After 3 days of incubation, the white-greyish, cotton-like colonies with aerial mycelium grew on the Sabouraud dextrose agar medium (Figure 2A) and Columbia blood agar plate (Figures 2B and C). The lactophenol cotton blue staining showed the thick mycelium, along with the production of terminal oval conidia and a brush of cylindrical conidia (Figure 2D).