case_images: PMC10753130_01
case_images: Case 1. Morphology of the psoas tumor (object lens 20x). (A) Hematoxylin and eosin stain showing metastatic carcinoma, compatible with metastasis from solid type pulmonary adenocarcinoma. High power magnification (inset, 40x) shows tumor cells with giant bizarre nucleus including prominent nucleolus. TTF-1 (B) and ALK (C) immunohistochemical stains are positive.
case_images: CCR3-12-e8368-g004.jpg
case_images: PMC10753130_01_CCR3-12-e8368-g004.jpg
case_images: ccr38368-fig-0002
case_images: CT-guided core needle biopsy for this tumor was performed, and undifferentiated carcinoma with positive immunostaining for ALK (D5F3) and thyroid transcription factor 1 (TTF-1) was consistent with lung cancer metastasis (Figure 2).
case_images: PMC10753130_02
case_images: Case 2. Morphology of the primary tumor (object lens 20x). (A) Hematoxylin and eosin staining showing poorly differentiated (grade 3) adenocarcinoma proliferating atypical cells with irregular and eccentric nuclei. (B) TTF-1 immunohistochemical stain is positive.
case_images: CCR3-12-e8368-g003.jpg
case_images: PMC10753130_02_CCR3-12-e8368-g003.jpg
case_images: ccr38368-fig-0004
case_images: T4N3M1c, stage IVB (Figure 4).