Fig. 1: Cut out tumorous nodule containing Spirocerca lupi parasites (arrow)

Fig. 2: Esophagus, wall showing parasitic eggs surrounded by degenerated and viable swollen macrophages and eosinophils, H&E x20.

Fig. 3: Esophagus, wall showing diffuse presence of fibroblast in “whorl” pattern all throughout the section (arrows), H&E x 20

Fig. 4: Esophagus, wall, osseous transformation of fibroblastic cells (arrow). H&E x20.

Fig. 5: Esophagus, wall, partial mineralization of osteoid mass (arrow). Masson trichrome x20

Fig. 6: Esophagus, wall with well demarcated osteoid zone (arrow). Van Geison x 20

Fig. 7: Spirocerca lupi, male showing two (2) unequal posterior spicules (white arrow) and four (4) lateral alae

Fig. 8: Subcutaneous tissue and intermuscular fascicles containing purulent exudates, necrotic areas with gradual constriction of overall muscle mass (arrow), H&E x20.

Fig. 9: Heart, vacuolar andgranular degeneration of purkinjee cells, H&E x20

Fig. 10: Kidney, distinct infiltration of lymphocytes, macrophages and lymphoblast in interstitium, H&E x20