case_images: PMC11750346_01
case_images: Computed tomography scans revealed a huge mass measuring 4.5 x 2.2 cm in the flank, with reports suggesting possible malignancy.
case_images: 10-1055-s-0044-1792022-i23sep0440cr-1.jpg
case_images: PMC11750346_01_10-1055-s-0044-1792022-i23sep0440cr-1.jpg
case_images: FI23sep0440cr-1
case_images: CT scans revealed a huge mass measuring 4.5 x 2.2 cm in the flank, with reports suggesting possible malignancy ( Fig. 1 ). CT also showed a spiculated mass in the right upper lobe, which was suspicious for lung cancer ( Fig. 2 ).
case_images: Computed tomography scans revealed a spiculated mass with infected bullae measuring 3.3 cm in the right upper lobe, with reports suggesting possible malignancy.
case_images: 10-1055-s-0044-1792022-i23sep0440cr-2.jpg
case_images: PMC11750346_01_10-1055-s-0044-1792022-i23sep0440cr-2.jpg
case_images: FI23sep0440cr-2
case_images: CT scans revealed a huge mass measuring 4.5 x 2.2 cm in the flank, with reports suggesting possible malignancy ( Fig. 1 ). CT also showed a spiculated mass in the right upper lobe, which was suspicious for lung cancer ( Fig. 2 ).
case_images: Ultrasound revealed a heterogeneously hypoechoic subcutaneous mass lesion with prominently increased vascularity and perilesional soft tissue edematous changes.
case_images: 10-1055-s-0044-1792022-i23sep0440cr-3.jpg
case_images: PMC11750346_01_10-1055-s-0044-1792022-i23sep0440cr-3.jpg
case_images: FI23sep0440cr-3
case_images: Ultrasonography showed a heterogeneously hypoechoic subcutaneous mass lesion with prominently increased vascularity and perilesional soft tissue edematous changes ( Fig. 3 ). 
case_images: (
  A
  ) A large protruding lump was identified. (
  B
  ) Postoperative view after wide local excision.
case_images: 10-1055-s-0044-1792022-i23sep0440cr-4.jpg
case_images: PMC11750346_01_10-1055-s-0044-1792022-i23sep0440cr-4.jpg
case_images: FI23sep0440cr-4
case_images:  Upon initial examination, a large protruding lump was identified on the patient's flank ( Fig. 4A ). Since the skin flap could be moved directly toward the defect, the flap was elevated and advanced ( Fig. 4B ). 
case_images: Histological findings of malignant pilomatricoma. (
  A
  ) At low magnification, the tumor displayed hyperchromatic basaloid cells and infiltrates on the periphery (
  arrowhead
  ). (
  B
  ) In a high-power image, the basaloid tumor cells exhibited significant cytologic atypia and frequent mitosis (indicated by
  arrows
  ) along with ghost cells (denoted by an
  asterisk
  ). Original magnification: (
  A
  ) x20; (
  B
  ) x400.
case_images: 10-1055-s-0044-1792022-i23sep0440cr-5.jpg
case_images: PMC11750346_01_10-1055-s-0044-1792022-i23sep0440cr-5.jpg
case_images: FI23sep0440cr-5
case_images: The tumor was composed of hyperchromatic basaloid cells and infiltrates on the periphery ( Fig. 5A ). The pathologic findings also included basaloid tumor cells exhibiting significant cytologic atypia and frequent mitosis with ghost cells, consistent with malignant pilomatricoma ( Fig. 5B ).