Laser biostimulation of wound healing: bioimpedance measurements support histology

Laser biostimulation in medicine has become widespread supporting the idea of therapeutic effects of photobiomodulation in biological tissues. The aim of this study was to investigate the biostimulation effect of laser irradiation on healing of cutaneous skin wounds, in vivo, by means of bioimpedance measurements and histological examinations. Cutaneous skin wounds on rats were subjected to 635 nm diode laser irradiations at two energy densities of 1 and 3 J/cm(2) separately. Changes in the electrical properties of the wound sites were examined with multi-frequency electrical impedance measurements performed on the 3rd, 7th, 10th, and 14th days following the wounding. Tissue samples were both morphologically and histologically examined to determine the relationship between electrical properties and structure of tissues during healing. Laser irradiations of both energy densities stimulated the wound healing process. In particular, laser irradiation of lower energy density had more evidence especially for the first days of healing process. On the 7th day of healing, 3 J/cm(2) laser-irradiated tissues had significantly smaller wound areas compared to non-irradiated wounds (p < 0.05). The electrical impedance results supported the idea of laser biostimulation on healing of cutaneous skin wounds. Thus, bioimpedance measurements may be considered as a non-invasive supplementary method for following the healing process of laser-irradiated tissues

Risk continues: Very late manifestation of helicobacter pylori at gastric augmented bladder

Helicobacter Pylori was previously demonstrated at gastric patch after gastrocystoplasty and a possible relationship with acid-haematuria syndrome was established after symptomatic relief by medical treatment. We present the long term outcome of a male bladder exstrophy patient after gastrocystoplasty. There was past history of bladder perforation, acid haematuria syndrome and treatment of HP and recurrent urinary tract infections, noncompliance on regular follow-up and cadaveric renal transplantation. At the preoperative evaluation for renal transplantation HP was present in the biopsy samples collected during gastroscopy and cystoscopy. The significance of persistant HP after gastrocystoplasty in the long term follow-up was discussed

Clinicopathologic features and immunohistochemical spectrum of 11 cases of epithelioid malignant peripheral nerve sheath tumors, including INI1/SMARCB1 results and BRAF V600E analysis

Epithelioid malignant peripheral nerve sheath tumor (MPNST) is a rare, relatively less chemosensitive sarcoma. We report clinicopathologic features of 11 epithelioid MPNSTs, including rare forms, along with INI1 immunostaining and BRAF V600E mutation results. BRAF V600E mutation was tested by Real-time polymerase chain reaction (PCR) technique. Eleven tumors occurred in six men and five women (M:F ratio = 0.85:1) within an age range of 5-73 years (average = 44), mostly in lower limbs (five), followed by upper limbs (four). Tumor size (n = 6), varied from 3.1 to 15 cm (average = 8.3). Histopathologically, most tumors were multilobular, characterized by epithelioid to round-shaped, malignant cells, along with spindle cells (three cases), "rhabdoid-like" cells (seven cases) and pleomorphic giant cells (single case). By immunohistochemistry, tumor cells were positive for S100 protein (11/11) (100%), EMA (3/7) (42.8%), pan CK(2/7) (28.5%), and HMB45 (1/11) (9%), while these were negative for Melan A (0/11) and INI1 (3/11), including a single tumor, displaying HMB45 positivity. BRAF V600E mutation was positive in 1/8 cases, that lacked melanocytic marker expression. All patients (n = 5) were treated by surgical resection. During follow-up (n = 8, median duration = 23 months), four patients developed tumor recurrences and four developed metastasis, mostly to lymph nodes (3). Finally, four patients were alive with disease, two were alive with no evidence of disease, and two patients died of disease. Epithelioid MPNSTs have a diverse histopathologic spectrum. Loss of INI1 is useful, including in identifying rare forms of epithelioid MPNST, displaying melanocytic differentiation. Most tumors are treated by surgical resection. Loss of INI1 and the presence of BRAF V600E mutation in some cases raises future possibility of exploring targeted therapy in those, rare epithelioid MPNSTs

The effects of laparoscopic mesh fixation device on bone, costo-chondral junction and tendon site

Osteitis pubis is one of the important complications of inguinal hernia repair surgery occurring with the placement of sutures through the periosteum. The aim of this study is to evaluate scintigraphic and histopathological alterations associated with the use of mesh fixation device on pelvic bone, cartilage and tendons in an experimental animal model. Twenty New-Zealand young male rabbits were used. A mesh fixation device was inserted at each animal's costa-chondral junction, superior anterior iliac crest, and achiles tendon. One week prior to the surgery and 16 weeks after the operation, scintigraphic evaluation was performed. Histopathological evaluation was performed at the end of study. No nuclear activity or pathological change was found at bone site (p > 0.05). Foreign body reaction was evident at the tendon and costa-chondral site (p=0.001)

Atypical lipomatous tumour of the head and neck region with dyspnea and dysphagia: a case report

Liposarcoma is one of the most common soft tissue sarcomas in adults. Atypical lipomatous tumour (ALT) rarely occurs in the head and neck region. Histopathologic grade of these tumours affect prognosis of this disease. The mainstay of treatment for ALT is surgical excision. In this article, a case of a huge ALT arising from the head and neck region and invading nearly entire left hemi-facial region is presented. Clinical and histopathologic features and therapeutic approaches related to this tumour are discussed reviewing the literature

Mandibular Ramus Epidermal Inclusion Cyst

Epidermal inclusion cyst in the mandibular ramus is a very rare condition. Intraosseous epidermal cysts are benign cysts appearing clinically as radiolucent lytic bone lesions. Definitive diagnosis is made with histopathologic examination. Treatment is simple curettage and grafting if the defect is large. We present a case of a 78-year-old man who was admitted to our clinic with th

Lumbar Paravertebral Fat-forming Solitary Fibrous Tumor (Lipomatous Hemangiopericytoma): A Case Report

The authors present an unusual case of lumbar paravertebral fat-forming solitary fibrous tumor (SFT) that was surgically removed. A 53-year-old woman was admitted with a 3-month history of back pain and right paravertebral mass. Lumbar magnetic resonance imaging revealed a mass lesion located in the right paravertebral area at the level of L4 and deep into the paravertebral muscles. The patient was operated by lumbar paramedian incision, and total removal of the tumor was achieved, without intraoperative or postoperative complications. Histopathologic examination confirmed the diagnosis of fat-forming SFT. To our best knowledge, no similar case of lumbar paravertebral fat-forming SFT has been described in the literature. The radiologic, intraoperative, and histopathologic findings of this extremely rare case are discussed