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Hideyuki Tada

Publications and source records attributed to Hideyuki Tada.

13 recordsLinked to original sources
PubMed2006

Chronic expanding hematoma in the temporal region.

We report a rare case of chronic expanding hematoma in the right temporal region that developed into a large mass during 12 years. The patient, who had a history of blunt trauma in her right temporal region at the age of 4 months, noticed a slowly growing mass at the same site in the last few months. Computed tomography revealed a well-circumscribed subcutaneous tumor. The tumor was completely resected. Histopathologically, this tumor was confirmed in the diagnosis of chronic expanding hematoma.

Capillaries↗
PubMed2005

Chronic expanding hematoma in the temporal region.

A rare case of chronic expanding hematoma in the right temporal region that developed into a large mass over the course of 12 years is reported. The patient, who had a history of blunt trauma to her right temporal region at the age of 4 months, noticed a slowly growing mass at the same site over the last few months. Computed tomography revealed a well-circumscribed subcutaneous tumor. The tumor was completely resected. Histopathologically, the diagnosis of chronic expanding hematoma was confirmed.

Child↗
PubMed2005

The use of calcium phosphate cement paste for the correction of the depressed nose deformity.

The authors report the use of calcium phosphate cement paste as a material for correction of depression after nasal bone fracture, and evaluate its usefulness. Biopex R (Mitsubishi Material Corporation, Tokyo, Japan) was used in this study as calcium phosphate cement (CPC), which was developed in Japan. CPC injection was used in six patients (four women and two men) with depressed nose deformity after nasal bone fracture. The patients' ages ranged from 29 to 67 years (mean, 49 years), and the follow-up period ranged from 12 to 27 months. The amount of injected cement varied from 0.5 to 2.5 mL, approximately. There was no postoperative infection or allergic reaction in any patient. Clinical and X-ray photography findings showed that a reduction in volume of the injected cement occurred gradually as long as 7 to 8 months after surgery. After that period, the volume was mostly maintained. It seemed that the degree of reduction was approximately 10% to 15% of the original volume. Satisfactory results were obtained in all cases. The authors conclude that the use of CPC is an option for the correction of depressed nose deformity and that its application must be determined in each case, considering its advantages and disadvantages.

Adult↗
PubMed2005

Mortality and recurrence rate after pressure ulcer operation for elderly long-term bedridden patients.

We operated on 16 sacral pressure ulcers in elderly and long-term residential patients who were immobile as a result of cerebral vascular disease. The mean age of patients was 76 years. Eight ulcers were treated with local fascial flaps and 8 by simple closure. The follow-up period was from 1 to 4 years. Recurrence and mortality rates were examined retrospectively. In the 16 patients, recurrence occurred in 37.5%, and 43.8% died without recurrence. The recurrence rate was 37.5% for local fascial flaps and 37.5% for simple closure. Overall mortality was 68.8% in the follow-up period. Because postoperative death was common, we should not only focus on reducing local pressure but also pay attention to any underlying disease. Because of this high mortality rate, the least invasive procedure possible should be used. Because the recurrence rate of simple closure was the same as for local fascial flaps, simple closure should be considered as a reconstructive method.

Age Factors↗
PubMed2005

Lymphoma of mucosa-associated lymphoid tissue (MALT) arising in the parotid gland.

Malignant lymphoma of the parotid gland is a rare condition. The authors present the case of a 59-year-old woman with primary malignant lymphoma arising from the parotid gland, in which they resected the tumors and surrounding lymph nodes. Histopathologic examination of the tumor demonstrated a lymphoma of mucosa-associated lymphoid tissue (MALT). Chemotherapy and radiotherapy were performed after surgery. The clinical manifestation, treatment, and postoperative course are described.

Female↗
PubMed2004

Expression of p53 family in scars.

BACKGROUND: There have been some reports on the relationship between p53 and keloid formation. However, there have been no studies comparing the p53 expression among scars in various stages of maturity. However, p63 and p73 have been identified as p53-related genes and have been found to be similar to p53 in their structures and functions and these proteins have also been suggested to relate to scar formation. OBJECTIVE: We investigate the expression of three proteins of the p53 family in scars with various clinical manifestations and discuss the shared features and differences of these proteins. METHODS: Forty untreated scar lesions consisting of keloids, hypertrophic scars, and atrophic scars were prepared for investigation. We detected the expression of p53, p63 and p73 proteins using Western blot analysis and histopathological study in each sample. RESULTS: The 40 lesions were divided into four groups according to their clinical manifestations: keloid (Group A), red hypertrophic scar (Group B), white and hard hypertrophic scar (Group C), atrophic white scar (Group D). In Groups A and B, the histopathological findings demonstrated increased fibroblasts, capillary vessels and infiltration of inflammatory cells. In Group C, most of these changes decreased but proliferation of collagen fibers was evident. In Group D, the degree of proliferation of collagen fibers was much less and capillary vessels and infiltration of inflammatory cells were not evident. The levels of p53 protein elevated in Groups A, B and C and were higher in order of Groups A, B and C. In Group D, the level of p53 was almost the same as that of the control. The level of p63 protein was almost the same as that of the control in all groups. The level of p73 protein was elevated only in Group C. CONCLUSION: The p53 family members behave in a different manner in various scar tissues. It is suggested that these proteins play different roles in scar formation and the development of unfavorable scars.

Adolescent↗
PubMed2004

Dermatofibrosarcoma protuberans arising from a burn scar of the axilla.

It is well-known that the development of a malignant tumor in a chronic burn scar is one of the long-term complications of a severe burn. Most of these tumors are squamous cell carcinomas, and sarcomas are much rarely seen in chronic burn scars. In the previous literature, 24 cases of burn scar sarcomas were reported. The authors report the second case of dermatofibrosarcoma protuberans arising in a chronic, severe burn scar. A 68-year-old woman with a reddish tumor in the right axilla was referred to the authors' hospital. The patient had sustained severe burns in the right axilla, upper arm, and trunk at the age of 6 years. A biopsy specimen revealed dermatofibrosarcoma protuberans. There was no evidence of distant metastasis. The tumor was excised widely to include the surrounding burn scar. Two years after the operation, there was no evidence of tumor recurrence. As surgeons, we should recognize the possibility of the occurrence of various malignant tumors including sarcomas on burn scars.

Aged↗
PubMed2004

Use of calcium phosphate cement for bone defect after harvesting radial forearm osteocutaneous flap.

To resolve esthetic and psychologic discomfort of patient due to the lack of radius after harvesting radial forearm osteocutaneous flap, we filled the bone defect and recreated its contour using calcium phosphate cement (CPC; Biopex; Mitsubishi Material Corporation, Tokyo, Japan). Injection of CPC was performed in 5 patients (3 women and 2 men). The patients' age ranged from 61 to 72 years (mean, 65 years), and the follow-up period ranged from 8 to 18 months. The size of the radius harvested varied from 10 x 35 mm to 10 x 50 mm. The width of the harvested bone was approximately 25% to 35% of the circumference of radius. Injected CPC volume varied from 3 to 4 mL, approximately. There was no postoperative infection or allergic reaction in any patient, and movement of hand was also with no problem. The X-P findings showed that the bone defect was filled with a uniform, high-density mass. The injected cement reduced in volume gradually during the fourth or fifth postoperative months, but the degree of reduction was mild in any case, which is probably less than 5% of the injected amount, allowing successful recreation of the contour of the radius. We conclude that the use of CPC for filling the defect of the bone donor site after harvesting radial osteocutaneous flap is valid method to keep a patient free from esthetic and psychologic discomfort due to the lack of the radius.

Aged↗
PubMed2003

An evaluation of functional improvement following surgical corrections of severe burn scar contracture in the axilla.

This report present an evaluation 13 consecutive cases of severe burn scar contracture of the axilla and investigates the factors that influence functional improvement. The operation was performed at various times during the period from 3 months to 63 years after the initial burn wound healed. The active range of shoulder abduction before the operation in these patients was restricted to 30-90 degrees. The scar contractures in the axilla were released in all cases and the defects of the axillary region were covered with musculocutaneous flaps or fasciocutaneous flaps. Following operation rehabilitation was performed with the range of shoulder abduction had reached a plateau. The relations between the improved range of shoulder abduction, time to reach a stable range of abduction, patient age and duration of illness in each patient are discussed. Patient with long post-injury periods required a longer time to reach a stable range of abduction. Furthermore, the patients with an extremely long period before operation had difficulties such as nerve injury or stiff joint which restricted improvement. In conclusion, adequate surgical treatment in early period after occurrence of contracture is desirable for burn scar contracture of the axilla.

Adolescent↗
PubMed2003

Distortion and movement of the expander during skin expansion.

Distortion and movement of tissue expanders can cause expansion of the wrong area, such as the naevus or the scar that is to be resected. In 71 rectangular expanders, we examined the incidence of distortion (over 15 degrees) and movement (over 3 cm). We divided the expanders into three anatomical site groups: scalp, body, and extremities, and compared the complication rate between two study groups (distortion or movement, or not). In total, the incidence of distortion was 15/71 (21%) and that of movement 5/71 (7%). Distortion occurred mainly in the extremities (11/33,33%). The implanted expanders tended to move more often in the body part (3/15, 20%). In the extremities, the bigger the angle between the axis of the implanted expander and that of the extremity, the bigger the angle of distortion. Although the incidence of complications between the two groups was not significant, except for alteration in design of the flap, we recommend that these points should be considered when preoperative plans are being made for appropriate patients.

Adolescent↗
PubMed2002

Rare case of a rudimentary medial metatarsal non-ossified structure.

A 9-year-old boy presented with a rudimentary medical metatarsal non-ossified structure. We considered his condition to be classified as hypoplastic medial member type in the metatarsal type of medial ray polydactyly. When it was considered as polydactyly, it had the longest delay of ossification among reported cases.

Child↗
PubMed2002

Preshaped hydroxyapatite tricalcium-phosphate implant using three-dimensional computed tomography in the reconstruction of bone deformities of craniomaxillofacial region.

We prepared solid life-sized models and templates of implants based on three-dimensional computed tomography data in six cases with a bone deformity of the craniomaxillofacial region. After simulation surgery using these models and templates, the preshaped hydroxyapatite-tricalcium phosphate (HAP-TCP) implants were prepared to fill in the facial bone defects, and implantation was performed. Consequently, implants fitted the individual bone defects, and satisfactory facial contouring was obtained in five cases. In one case with severe cutaneous scarring in the grafted site, it was necessary to reduce the volume of the preshaped HAP-TCP implant during surgery. In conclusion, the three-dimensional, solid, life-sized model and template are useful for preoperative detailed simulation, and the use of preshaped HAP-TCP implants based on the template probably contributes to successful reconstruction of complex facial bone deformities and to the reduction of surgical invasion, resulting in achievement of better results.

Adult↗