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http://dx.doi.org/10.1038/s41577-024-01125-2 | DOI Listing |
Purpose: Fibrosis of muscle spindles (sensory organs) in back muscles induced by intervertebral disc (IVD) degeneration could limit transmission of muscle stretch to the sensory receptor and explain the proprioceptive deficits common in back pain. Exercise reduces back muscles fibrosis. This study investigated whether targeted muscle activation via neurostimulation reverses or resolves muscle spindle fibrosis in a model of IVD injury.
View Article and Find Full Text PDFJ Orthop Case Rep
January 2025
Department of Orthopaedics, Mahatma Gandhi Medical College and Hospital, Jaipur, Rajasthan, India.
Introduction: Low-grade myofibroblastic sarcoma (LGMS) is an atypical and extremely infrequent type of tumor, primary mass being usually present in subcutaneous and soft tissue. Bony involvement is very rare. It has a very high chance of recurrence locally due to its aggressive biological behavior, metastasis in other parts of body is rarely seen.
View Article and Find Full Text PDFPathol Int
January 2025
Department of Surgical Pathology, Kagoshima University Hospital, Kagoshima, Japan.
A male in his seventies presented with lung cancer in the right lower lobe. The surgically resected specimen revealed a pleomorphic carcinoma featuring an adenocarcinoma component with lepidic, acinar, and papillary patterns, alongside a spindle cell component spreading along the pulmonary artery wall, resembling intimal sarcoma. The spindle tumor cells were positive for keratins, TTF-1, napsin A, and vimentin, but negative for p40, CK14, desmin, alpha-smooth muscle actin, CDK4, and MDM2.
View Article and Find Full Text PDFCureus
December 2024
Pathology and Laboratory Medicine, Saint Michael's Medical Center, Newark, USA.
Perivascular epithelioid cell tumors (PEComas) are a rare group of mesenchymal neoplasms composed of perivascular epithelioid cells. While commonly found in the kidney, uterus, and soft tissues, PEComas of the liver are exceedingly rare. We present a case of a PEComa incidentally discovered in a 73-year-old female patient undergoing evaluation for abdominal pain.
View Article and Find Full Text PDFThe plantaris muscle is spindle-shaped in the posterior compartment of the leg. It is distinguished for its small muscle belly and an exceptionally long tendon. It presents with great variability in its origin and insertion when present.
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