case_images: PMC11310160_01
case_images: Positron emission tomography/computed tomography using 18F-fluorodeoxyglucose fusion images of the dog. (A) Cranial part of flank mass. SUVmax is 5.354. (B) Caudal part of flank mass. SUVmax is 8.062. (C) Axillary lymph node. SUVmax is 7.453. (D) Inguinal lymph node. SUVmax is 1.961.
case_images: fvets-11-1429094-g001.jpg
case_images: PMC11310160_01_fvets-11-1429094-g001.jpg
case_images: fig1
case_images: The corresponding SUVmax values were 5.354 (cranial part of the flank masses), 8.602 (caudal part of the flank masses), 7.453, and 1.961 (Figure 1).
case_images: Transverse planar computed tomography (CT) images of the left axillary lymph node measuring 3.74 x 1.58 x 2.5 cm (A,B) and left inguinal lymph node measuring 7.49 x 8.67 x 6.08 mm (C,D). Pre-contrast CT image (A,C). (B) Post-contrast CT image showing heterogeneous enhancement with multifocal areas of necrosis and apparent invasion into the surrounding tissue. (D) Post-contrast CT image showing subtle contrast enhancement.
case_images: fvets-11-1429094-g002.jpg
case_images: PMC11310160_01_fvets-11-1429094-g002.jpg
case_images: fig2
case_images: Post-contrast CT imaging showed heterogeneous enhancement in the left axillary LN, measuring 3.74 x 1.58 x 2.5 cm, with apparent invasion into the surrounding tissues (Figures 2A,B). The left inguinal LN measured 7.49 x 8.67 x 6.08 mm with subtle contrast enhancement on post-contrast CT imaging (Figures 2C,D).
case_images: Flank skin mass resection and lymphadenectomy. (A) The flank mass was excised with a 3-cm margin, including the subcutaneous fat. (B) The left axillary lymph node infiltrating the surrounding tissues was excised, noting the mass exceeding 3 cm in size and its palpable firmness. (C) The left inguinal lymph node was resected together with the adjacent tissue.
case_images: fvets-11-1429094-g003.jpg
case_images: PMC11310160_01_fvets-11-1429094-g003.jpg
case_images: fig3
case_images: Despite the detection of LN metastasis on PET/CT, the patient underwent skin mass resection and a two-site lymphadenectomy for palliative purposes (Figure 3).
case_images: Histopathology of the left flank mass after skin mass resection and lymphadenectomy. (A) Keratin pearls present in squamous cell carcinoma (H&E stain, original magnificationx20, scale bar 100 um). (B) Left axillary lymph node with squamous cell carcinoma (H&E stain, original magnificationx20, scale bar 50 um). (C) Left inguinal lymph node with squamous cell carcinoma (H&E stain, original magnification5, scale bar 200 um).
case_images: fvets-11-1429094-g004.jpg
case_images: PMC11310160_01_fvets-11-1429094-g004.jpg
case_images: fig4
case_images: Keratin pearls were observed within numerous lobules, trabeculae, and islands (Figure 4A). The surgical margins were complete; however, extensive carcinomatous spread to both the left axillary and inguinal LNs was observed (Figures 4B,C).