Publications by authors named "Masamitsu Kuwahara"

As carbon ion radiotherapy (CIRT) was developed only recently, reports of CIRT-induced ulcers requiring plastic surgery are still rare, but the number of such cases is expected to increase. Here, we describe a case of a CIRT-induced ulcer to aid the treatment of such ulcers. An 82-year-old man had a sacral chordoma (12 × 7.

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Background: Le Fort III distraction for syndromic craniosynostosis is performed using internal or external devices. The authors compared the results of both devices.

Methods: The authors retrospectively evaluated 60 patients with syndromic craniosynostosis treated with Le Fort III distraction (internal or external device) between 2001 and 2021.

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Chronic expanding hematoma (CEH) is a rare type of hematoma that expands slowly and continuously without compromising coagulation. Its etiology is often unknown. However, we experienced a rare case of CEH, in which an epidermal cyst was thought to be the cause.

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We encountered a 51-year-old male patient who was not immunocompromised. Thirteen days before his admission, his right forearm was scratched by his pet cat. Swelling, redness, and purulent discharge appeared at the site, but he did not seek medical attention.

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We report the clinical course of a patient who developed a sacral radiation ulcer 19 years after treatment for cervical cancer. The patient's postoperative course after a free latissimus dorsi muscle flap transfer was favorable, but various late radiation complications, including rectal perforation, a rectal fistula, sacral necrosis, a rectointestinal fistula, and sacroiliac joint osteomyelitis, occurred within 11 years. Plastic surgeons who treat such ulcers need to know that patients may develop other serious radiation-related complications.

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Article Synopsis
  • The standard reconstructive method for large lower lip defects involves using a thin flap with a tendon, but this can lead to flap ptosis, as seen in two patient cases.
  • To address the ptosis, costal cartilage was transplanted, yielding moderate to good results, although long-term issues like cartilage breakage were noted after multiple surgeries.
  • Successful reconstruction depends on careful consideration of factors like the angle of cartilage placement, skin extensibility, and securely anchoring thicker cartilage to ensure lasting stability.
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Unlabelled: Skin contracture after skin grafting is undesirable. It is generally accepted that full-thickness skin grafts contract less than split-thickness skin grafts. However, unexpected secondary skin-graft contracture sometimes occurs after full-thickness skin grafting.

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  • Abdominal hernia repairs often use prosthetic mesh, which can get infected, typically requiring mesh removal, but recent cases show that negative-pressure wound therapy (NPWT) might save infected mesh.
  • An 85-year-old woman's ventral hernia repair resulted in a rare nontuberculous mycobacterium infection, leading to pus discharge and necrosis under the mesh by the seventh day after surgery.
  • After 4 weeks of NPWT, the infection showed improvement and good tissue healing, suggesting that NPWT could be a viable option to preserve infected mesh when guided by an infectious disease specialist.
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We treat infected cysts on a daily basis, but it is difficult to diagnose similar lesions produced by inflammatory conditions that are not primarily caused by bacteria. Dissecting cellulitis of the scalp (DCS) is a chronic inflammatory disease that results in disfiguring, painful, and purulent lesions. It often takes a long time to diagnose.

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Article Synopsis
  • Surgery for chest radiation ulcers is complex due to the difficulty in removing all damaged tissue, leading to uncertainty about the extent of surgical intervention needed.
  • A case is presented involving a 46-year-old patient who developed a severe chest ulcer 17 years after cancer treatment and postoperative radiotherapy, resulting in significant complications including lung damage and pathological rib fractures.
  • The surgery involved excising affected skin and ribs, partial lung resection, and reconstruction, suggesting that more comprehensive initial surgical margins might be essential to prevent the need for additional surgeries later.
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Introduction And Importance: Immunocompromised patients are at high risk of unexpectedly serious infections caused by uncommon bacteria or fungi. We experienced a case of Cryptococcus neoformans-induced necrotizing fasciitis (NF) of the lower extremities. The progress so far has been reported by the urology department [1].

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Introduction: Implant-based breast reconstruction is a widely performed procedure. However, prostheses are susceptible to infection and there are currently no established guidelines on treatment. In the present case, a prosthesis was salvaged by changing from continuous irrigation and suction to continuous irrigation and intermittent suction.

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In dialysis patients, peripheral venous hypertension-induced hand ulcers are rare. We report a case in which a severe hand ulcer was treated with skin grafting after shunt ligation. The patient was a 60-year-old woman who been undergoing dialysis for 13 years.

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Introduction: We report a case in which squamous cell carcinoma (SCC) developed in a large chronic radiation-induced thoracic ulcer after flap surgery in areas where preoperative histological examinations are difficult.

Presentation Of Case: The patient was a 75-year-old female. She had undergone resection and radiotherapy for left breast cancer 15 years earlier.

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Agminated nevus refers to a clustered group of melanocytic nevi confined to a localized area of the body. It rarely involves acral skin, but recognition of acquired agminated nevus (AAN) in the acral area is clinically important because it may mimic acral lentiginous melanoma (ALM). However, acral AAN has only been described in a few case reports and its clinical characteristics remain unclear.

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We report a case, function preservation of the upper lip after tumor resection was possible using residual orbicularis oris muscle and attached levator labii superioris alaeque nasi. Patient was 67-year-old male with squamous cell carcinoma at the vermilion border. The tumor was resected with an 8-mm margin, leaving the oral mucosa as intact as possible.

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Background: Anal gland carcinoma with perianal Paget's disease is rare, and anal gland carcinoma in situ is extremely rare. No cases of anal gland carcinoma in situ with pagetoid spread have been previously reported.

Case Presentation: Physical examination in a 75-year-old woman revealed an erythematous, inflamed, perianal skin lesion.

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We herein report a case of clear cell carcinoma arising from endometriosis in the groin in a 53-year-old woman. The findings of MRI and FDG/PET-CT indicated a malignant tumor, and surgical biopsy confirmed adenocarcinoma of the female genital tract. The tumor including a part of the abdominal rectus muscle and rectus sheath, subcutaneous fat, skin, and the right inguinal ligament was resected .

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It is difficult to totally reconstruct the lip, achieving good functional and aesthetic results. There have been few reports of reconstructing complete lip defects. Moreover, upper and lower lip necrosis by purpura fulminans has not been reported.

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Pachydermoperiostosis is a rare hereditary disease, which presents with the cutaneous manifestations of pachydermia and cutis verticis gyrata. Histological findings in pachydermia frequently include dermal edema, mucin deposition, elastic fiber degeneration, dermal fibrosis and adnexal hyperplasia. However, the severity of these findings varies between clinical reports, and a systematic multiple-case clinicopathological correlative analysis has not been performed to date.

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