Purpose: This study aimed to evaluate and analyze the feasibility and the oncological and functional outcomes of limb salvage surgery in extremity soft tissue sarcomas (ESTS) and bone tumors invading vessels. Materials and Methods: This single-center retrospective analysis included patients with ESTS encasing or invading major blood vessels that were treated by limb salvage surgery with vascular resection and reconstruction between January 1995 and December 2019. Patients with contiguous involvement of major blood vessels and nerves and patients requiring amputation were excluded from the study. Results: A total of 24 vessels (14 arteries and 10 veins) in 14 patients were reconstructed. Ten (71.4%) patients underwent both arterial and venous reconstruction, and four (28.6%) underwent only arterial reconstruction. Reconstruction was performed with a reversed saphenous vein (RSV) graft in 12 patients and with a synthetic graft (SG) in the other 12 patients. At a median follow-up of 27 months, RSV grafts were patent in 10 of 12 (83.3%) vessels and SGs were patent in 6 of 12 (50.0%) vessels (log-rank test, P=0.083). Out of 14 arteries and 10 veins, 11 arteries and 5 veins were patent, respectively. No patient developed local recurrence, and 2 (14.3%) patients developed distant metastases. Limb salvage rate was 13/14 (92.9%). The mean Musculoskeletal Tumor Society score was 83.3%. The 5- and 10-year overall survival rates were 80% and 50%, respectively. Conclusion Limb salvage surgery in ESTS with vascular resection and reconstruction is feasible and provides favorable oncological and functional outcomes.

Purpose: This study aimed to evaluate and analyze the feasibility and the oncological and functional outcomes of limb salvage surgery in extremity soft tissue sarcomas (ESTS) and bone tumors invading vessels. Materials and Methods: This single-center retrospective analysis included patients with ESTS encasing or invading major blood vessels that were treated by limb salvage surgery with vascular resection and reconstruction between January 1995 and December 2019. Patients with contiguous involvement of major blood vessels and nerves and patients requiring amputation were excluded from the study. Results: A total of 24 vessels (14 arteries and 10 veins) in 14 patients were reconstructed. Ten (71.4%) patients underwent both arterial and venous reconstruction, and four (28.6%) underwent only arterial reconstruction. Reconstruction was performed with a reversed saphenous vein (RSV) graft in 12 patients and with a synthetic graft (SG) in the other 12 patients. At a median follow-up of 27 months, RSV grafts were patent in 10 of 12 (83.3%) vessels and SGs were patent in 6 of 12 (50.0%) vessels (log-rank test, P=0.083). Out of 14 arteries and 10 veins, 11 arteries and 5 veins were patent, respectively. No patient developed local recurrence, and 2 (14.3%) patients developed distant metastases. Limb salvage rate was 13/14 (92.9%). The mean Musculoskeletal Tumor Society score was 83.3%. The 5- and 10-year overall survival rates were 80% and 50%, respectively. Conclusion Limb salvage surgery in ESTS with vascular resection and reconstruction is feasible and provides favorable oncological and functional outcomes.

Paragangliomas are rare neuroendocrine tumors that frequently arise in the organ of Zuckerkandl (OZ). Surgical resection remains the cornerstone of treatment. Although vascular resection and reconstruction have been reported in a few cases, no prior reports have documented the simultaneous resection of both the aorta and inferior vena cava (IVC), along with their bifurcation. We present the case of a 50-year-old man with a large paraganglioma of the OZ, successfully managed through combined resection of the aorta, IVC, their bifurcation, and the psoas muscle. Dacron Y-grafts were used to reconstruct both the aorta and IVC. This case underscores the importance of detailed anatomical knowledge of major vessels, meticulous vascular control, and the technical intricacies of vascular reconstruction. We emphasize the significance of comprehensive perioperative management and provide a literature review on en bloc vascular resection for paraganglioma, offering insights into current surgical practices and outcomes.

Paragangliomas are rare neuroendocrine tumors that frequently arise in the organ of Zuckerkandl (OZ). Surgical resection remains the cornerstone of treatment. Although vascular resection and reconstruction have been reported in a few cases, no prior reports have documented the simultaneous resection of both the aorta and inferior vena cava (IVC), along with their bifurcation. We present the case of a 50-year-old man with a large paraganglioma of the OZ, successfully managed through combined resection of the aorta, IVC, their bifurcation, and the psoas muscle. Dacron Y-grafts were used to reconstruct both the aorta and IVC. This case underscores the importance of detailed anatomical knowledge of major vessels, meticulous vascular control, and the technical intricacies of vascular reconstruction. We emphasize the significance of comprehensive perioperative management and provide a literature review on en bloc vascular resection for paraganglioma, offering insights into current surgical practices and outcomes.

Paragangliomas are rare neuroendocrine tumors that frequently arise in the organ of Zuckerkandl (OZ). Surgical resection remains the cornerstone of treatment. Although vascular resection and reconstruction have been reported in a few cases, no prior reports have documented the simultaneous resection of both the aorta and inferior vena cava (IVC), along with their bifurcation. We present the case of a 50-year-old man with a large paraganglioma of the OZ, successfully managed through combined resection of the aorta, IVC, their bifurcation, and the psoas muscle. Dacron Y-grafts were used to reconstruct both the aorta and IVC. This case underscores the importance of detailed anatomical knowledge of major vessels, meticulous vascular control, and the technical intricacies of vascular reconstruction. We emphasize the significance of comprehensive perioperative management and provide a literature review on en bloc vascular resection for paraganglioma, offering insights into current surgical practices and outcomes.

Paragangliomas are rare neuroendocrine tumors that frequently arise in the organ of Zuckerkandl (OZ). Surgical resection remains the cornerstone of treatment. Although vascular resection and reconstruction have been reported in a few cases, no prior reports have documented the simultaneous resection of both the aorta and inferior vena cava (IVC), along with their bifurcation. We present the case of a 50-year-old man with a large paraganglioma of the OZ, successfully managed through combined resection of the aorta, IVC, their bifurcation, and the psoas muscle. Dacron Y-grafts were used to reconstruct both the aorta and IVC. This case underscores the importance of detailed anatomical knowledge of major vessels, meticulous vascular control, and the technical intricacies of vascular reconstruction. We emphasize the significance of comprehensive perioperative management and provide a literature review on en bloc vascular resection for paraganglioma, offering insights into current surgical practices and outcomes.

Paragangliomas are rare neuroendocrine tumors that frequently arise in the organ of Zuckerkandl (OZ). Surgical resection remains the cornerstone of treatment. Although vascular resection and reconstruction have been reported in a few cases, no prior reports have documented the simultaneous resection of both the aorta and inferior vena cava (IVC), along with their bifurcation. We present the case of a 50-year-old man with a large paraganglioma of the OZ, successfully managed through combined resection of the aorta, IVC, their bifurcation, and the psoas muscle. Dacron Y-grafts were used to reconstruct both the aorta and IVC. This case underscores the importance of detailed anatomical knowledge of major vessels, meticulous vascular control, and the technical intricacies of vascular reconstruction. We emphasize the significance of comprehensive perioperative management and provide a literature review on en bloc vascular resection for paraganglioma, offering insights into current surgical practices and outcomes.

Recurrent parosteal sarcomas with vascular involvement are rare and present unique challenges in their diagnosis and management. We report the case of a 21-year-old woman with parosteal osteosarcoma of the left distal femur, encasing the popliteal vessels. En bloc transarticular resection of the distal femur and popliteal vessels was performed, followed by reconstruction using a modular prosthesis and a saphenous vein autograft for both the artery and vein. On the 1st postoperative day, the patient developed an arterial thrombus requiring reintervention with a jump polytetrafluoroethylene (PTFE) graft. Histopathology confirmed parosteal osteosarcoma.After a disease-free survival of 41 months, the patient experienced local recurrence involving the PTFE graft, leading to graft compression, erosion, and subsequent thrombosis. Despite these complications, limb salvage was possible due to adequate collateral blood supply. This case highlights the feasibility of limb salvage surgery in select cases of parosteal osteosarcoma with vascular involvement.

Methods: IVDs of nine fetal specimens obtained from medical abortions were used to dissect out the annulus fibrosus and nucleus pulposus under sterile operating conditions. Dissected tissues were transferred to sterile Cryovials and snap frozen in liquid nitrogen before transporting to the research laboratory for protein extraction and further liquid chromatography tandem mass spectrometry (LC-MS/ MS) analysis. Collected data were further analyzed using Gene Functional Classification Tool in DAVID and STRING databases. Results: A total of 1,316 proteins were identified through LC-MS/MS analysis of nine fetal IVD tissues. Approximately 247 proteins present in at least four fetal discs were subjected to further bioinformatic analysis. The following 10 clusters of proteins were identified: collagens, ribosomal proteins, small leucine-rich proteins, matrilin and thrombospondin, annexins, protein disulfide isomerase family proteins and peroxiredoxins, tubulins, histones, hemoglobin, and prolyl 4-hydroxylase family proteins. Conclusions This study provides fundamental information on the proteome networks involved in the growth and development of healthy fetal discs in humans. Systematic cataloging of proteins involved in various structural and regulatory processes has been performed. Proteins expressed most abundantly (collagen type XIV alpha 1 chain, biglycan, matrilin 1, and thrombospondin 1) in their respective clusters also elucidate the possibility of utilizing these proteins for potential regenerative therapies.

Methods: Forty NP tissues were snap-frozen in liquid nitrogen (–196°C) immediately before being subjected to proteomic and bioinformatic analyses from five different disk phenotypes (eight each). Results: Tandem mass spectrometric analysis revealed a total of 1,050 proteins in FDs, 1,809 in ND, 1,487 in SD, 1,859 in DH, and 1,538 in the DD group. Of 28 major collagens reported in the human body, this study identified 24 different collagens with 34 subtypes in NP. Fibril-forming collagens (COL-1, 2, and 11A1) and fibril-associated collagens with interrupted triple helices (COL-9A1, 12A1, and 14A1) were abundantly expressed in FDs, representing their role in the development of NP. Multiplexin (COL-15), a hybrid proteoglycan–collagen molecule, was discovered only in FDs. Degeneration was associated with COL2A1 downregulation and COL-10A1 upregulation. Conclusions COL10 was discovered to be a new biomarker for disk degeneration. Besides COL-1 and 2, other important COLs (6, 9, 11, 12, 14, 15) with anabolic potential and abundant expression in the fetal phenotype could be investigated for tissue engineering and novel DDD therapy.