Bone-forming gastric metastases in muscle—Computed tomographic demonstration

Intramuscular metastasis from gastric cancer

“…There are several reports, including our report, of surgical excision, or radiation therapy, or systemic chemotherapy for intramuscular metastasis from primary gastric cancer [3,4,7,12,13]. The clinical complaints were alleviated by these therapies in some patients, including our patient [4,12].…”

“…Twelve cases of intramuscular metastases from gastric carcinoma, including our case (Table 1) have been reported in the literature since 1970, as far as we could determine from our search [3][4][5][6][7][8][9][10][11][12][13]. In these previous reports, there was no difference according to sex, and the mean age of the patients was 57.7 years (range, 47-72 years).…”

“…Contrast enhanced CT may provide more information than unenhanced CT [3,14]. However, CT is particularly useful in detecting the calcification of lesions, which is sometimes caused by mucinous adenocarcinoma [12,13]. In such cases, CT scans are useful in detecting metastatic lesions with ossification.…”

“…4); these findings were related to the characteristic MRI findings. In our patient, a possible differential diagnosis [4] 1990 65 M Sartorius m., Rectus femoris m. Narvaez et al [5] 1998 49 M Psoas m. Traves and Barruch [6] 1979 52 M Psoas m. Pestalozzi and von Hochstetter [7] 1998 72 F Gastrocnemius m. Amano and Kumazaki [8] 1996 57 M Gastrocnemius m. Toillon et al [9] 1994 58 M Gastrocnemius m. Van Gelderen [10] 1993 47 F Extraocular m. Arnold et al [11] 1989 59 F Extraocular m. Rosenbaum et al [12] 1984 54 M Upper arm m., Femoral m. Obley et al [13] 1983 54 M Paraspinal m. Our patient 64 F Gluteus maximus m., Adductor magnus m. Fig. 4A,B.…”

Imaging and histopathological characteristics of carcinoma‐induced bone formation in skeletal muscle

“…The requirements of bone induction include the presence of osteogenic precursor cells (including mesenchymal cells distributed in normal tissues), the presence of inducing agents and an environment permitting osteogenesis such as muscle and fascia. 15 There have been numerous studies demonstrating the ability of transplanted urinary bladder epithelium to induce bone formation in soft tissues. [15][16][17] This phenomenon has been studied and produces consistent results in dogs, cats, rabbits, gerbils and guinea pigs.…”