Some authors have used sebaceous epithelioma as a synonym for basal cell carcinoma (BCC) with sebaceous differentiation. However, our review of the literature revealed that definite cases of BCC with sebaceous differentiation that provide adequate clinical and histopathologic information are scarce. We present the case of a 72-year-old woman with a pigmented nodular lesion on her right ala nasi region, clinically diagnosed as pigmented BCC. Histopathologically, this nodular lesion, which was completely excised, showed typical features of BCC. It was noteworthy that within one aggregation of the presented BCC, tiny and small duct-like structures lined by cornified layers with a crenulated inner surface were seen. Vacuolated cells were scattered within a few aggregations, and they had foamy, bubbly cytoplasm and starry nuclei. The vacuolated cells were immunohistochemically positive for epithelial membrane antigen (EMA). These histopathologic findings demonstrated unquestionable sebaceous differentiation in this BCC, namely BCC with sebaceous differentiation, which should be distinguishable from both sebaceoma and sebaceous carcinoma. The small duct-like structures lined by eosinophilic cuticle, indicating apocrine differentiation, were also observed in this BCC.
Sinus pericranii is a vascular tumor of the head having communication with the dural venous system. The tumor enlarges with increased intracranial pressure when the patient is in the lateral recumbent position. Since Stromeyer used the term "sinus pericranii" in his report in 1850, approximately 170 cases have been reported. However, relatively few cases of sinus pericranii have been reported in association with craniosynostosis or by plastic surgeons. In this study, we report seven cases of sinus pericranii associated with craniosynostosis. There were two patients with Apert syndrome, two with Crouzon syndrome, two with oxycephaly, and one with trigonocephaly. The sites of occurrence were the parietal region in six patients and the frontal region in one patient. In either type of case, the tumor was clinically a soft subcutaneous mass of the head. The clinical characteristics of the tumor were its disappearance when the patient was in a sitting position and its appearance when the patient was in a recumbent position or crying. The patients were preoperatively diagnosed with sinus pericranii from imaging test findings, such as from magnetic resonance imaging and aforementioned clinical findings. In all cases, treatment for sinus pericranii was performed during the surgery for craniosynostosis. For patients with lesions in either site, we did not perform craniotomy, and we used a minimally invasive method of tumor excision and resection of the sites of communication using electrocoagulation. Perioperatively, heavy hemorrhage was not observed, and, postoperatively, no recurrence has been observed in any patient. In this study, we examine the etiology, diagnosis, and treatment of sinus pericranii, in particular for patients with craniosynostosis.
Oxycephaly is associated with raised intracranial pressure as a result of the fusion of multiple cranial sutures. We have performed an effective and less invasive cranial expansion by means of three-dimensional cranial distraction for the treatment of oxycephaly with suspicion of increased intracranial pressure. We describe two oxycephaly cases and the surgical technique of three-dimensional cranial expansion using distraction osteogenesis.
In recent years, obstructive sleep apnea has gained attention as one of the causes of sudden death in young children. There have been some reports, mainly from the United States and Europe, that mandibular distraction osteogenesis is effective as a treatment for obstructive sleep apnea syndrome caused by micrognathia in young children. However, there has not been any report yet in Japan. In this study, we performed mandibular distraction osteogenesis using internal devices in 10 young children with obstructive sleep apnea. To enable distraction to be performed smoothly without any difficulties, we modified a surgical procedure by adding an osteotomy of the coronoid process to a vertical ramus osteotomy. Postoperative evaluations using cephalograms and polysomnography were performed, and great improvements were observed. As a result, all patients either avoided or were weaned from tracheostomy, and very good results were obtained similar to those in reports from the United States and Europe. We report our experience in Japan.
An intramuscular lipoma within the musculature of the head and neck is unusual. Most of them are infiltrating lipomas, and we know of no description of a well-circumscribed lipoma of the temporalis muscle. We present a 64-year-old woman who had a non-pulsatile, soft, mobile mass in the right temporal fossa. The lesion 11 x 8 x 3 cm in size was diagnosed using magnetic resonance imaging, it was resected, and she has recovered well with a good cosmetic result.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.