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Biomedical subjects

Se Il Lee

Publications and source records attributed to Se Il Lee.

15 recordsLinked to original sources
PubMed2006

Analysis of nasal bone fractures; a six-year study of 503 patients.

The aim of this study is to classify the nasal bone fractures based on computed tomography (CT) analysis and patterns of the nasal bone fractures, and review 503 cases treated between 1998-2004 at the Department of Plastic Surgery, Inha University Hospital, Incheon, South Korea. The age, sex, etiology, associated injuries, pattern of fractures and treatments were reviewed and a radiographic study was analyzed. Plain simple radiographs of lateral and Waters view of the nasal bones combined with computed tomography scans were done. Nasal bone fractures were classified into six types: Type I) Simple without displacement; Type II) Simple with displacement/without telescoping; IIA; Unilateral; IIAs) Unilateral with septal fracture; IIB) Bilateral; IIBs) Bilateral with septal fracture; Type III) Comminuted with telescoping or depression. Diagnosis of nasal bone fractures were made positively by plain x-ray films in 82% of cases, negative finding was 9.5% and 8.5% of cases were suspicious of the fractures. Reliability of the plain film radiographs of the nasal bone fracture was 82% in this study. In the most of the fractured nasal bones (93%) the closed reduction was done, open reduction in 4% and no surgical intervention in 3%. Nasal reduction was carried out in average 6.5 days post the injury. The patterns of the nasal bones fractures classified by CT findings were type IIA (182 cases, 36%), IIBs (105 cases, 21%), IIB (90 cases, 18%), IIAs (66 cases, 13%), I (39 cases, 8%) and III (21 cases, 4.3%). We think the CT is necessary for diagnosing nasal bone fracture because the reliability of the plain film was only 82%.

Adolescent↗
PubMed2006

Sudden change of a large congenital melanocytic nevus to neurocutaneous melanosis.

Neurocutaneous melanosis (NCM) is a congenital phakomatosis in which large congenital melanocytic nevi are associated with a benign or malignant melanocytic tumor of the leptomeninges. Because the prognosis of patients with symptomatic NCM is poor, it is essential to monitor the large congenital melanocytic patient regularly for a neurological evaluation. However, it has not been reported how quickly the lesion could appear. We observed a case of NCM suddenly developing in a large congenital melanocytic nevi patient. With this case, the NCM had developed within six months and was aggravated during the subsequent six months.

Brain Neoplasms↗
PubMed2005

Neurilemmoma of the tongue.

The authors report a case of uncommon neurilemmoma on the tip of the tongue. A 23-year-old Korean man presented with a mass on the tip of the tongue, which was noted first 3 years before, when it was a small nodule. The mass had been growing slowly. Physical examination revealed a firm, not-tender, oval, elevated, protruded, red mass on the right side tip of the tongue. It measured 2 x 2 cm. The lesion was well capsulated and separated easily. A complete excision was done, and the wound was closed primarily. Histopathologic examination revealed an encapsulated spindle cell tumor, of which two types of the tissue were clear. A small and slow-growing mass in the tongue with positive history of tongue bite is first suggestive of neurilemmoma, as well as neurofibroma, lingual cyst, and minor salivary gland tumor.

Adult↗
PubMed2004

Zygomaticotemporal nerve passage in the orbit and temporal area.

Injury of the zygomaticotemporal nerve causes paresthesia in its distributed area, and its entrapment induces protractive pain in case of manipulation of the orbital lateral wall, a Gillies or Dingman reduction procedure for a zygomatic fracture, or an endoscopic subperiosteal facelift. The aim of this study was to elucidate the surgical anatomy of the zygomaticotemporal nerve in the orbit and temporal area. Twenty hemifaces from 10 adult Korean cadavers (10 male and 10 female) were used in the study. The zygomaticotemporal nerve ran along the lateral wall of the orbit, passed through the zygomaticotemporal foramen, and reached to the temporal fossa. The point where the zygomaticotemporal nerve appears at the margin of zygomatic bone is defined as the vulnerable point (Vp); hence, the nerve might be injured during surgical procedures. The Vp was 11.29 +/- 2.65 mm below the zygomaticofrontal suture and 21.76 +/- 2.76 mm from the superior border of zygomatic arch. The most vulnerable points were within a 10-mm diameter circle (vulnerable zone). Its center was 11 mm from the zygomaticofrontal suture at an angle of 45 degrees inferolaterally. The zygomaticotemporal nerve ran between the deep layer and the superficial layer of the deep temporal fascia. It ran just superficial to the deep layer of the deep temporal fascia toward the temporal area and innervated the temporal skin. The area innervated by terminal branches of the zygomaticotemporal nerve included a circle with 30-mm diameter, with the center located 10 mm superior to the top of the auriculocephalic sulcus and 30 mm lateral to the lateral canthus. Precautions should be taken when working in the area of the vulnerable zone during the Dingman procedure involving periorbital incision in case of zygomatic fracture.

Adult↗
PubMed2004

A split ostectomy of mandibular body and angle reduction.

Combined mandibular angle resection with angle-splitting ostectomy (ASO) is more effective than conventional simple or multistaged ostectomy. Removal of the outer cortex of the mandibular body by ASO lessens the protuberance of the masseter muscle. In this study, the anatomy of the mandibular canals in seven human cadavers was studied in detail, and a guideline for ASO and mandibular angle ostectomy was set up so as to avoid injury to the inferior alveolar nerve. The most vulnerable area of the inferior alveolar nerve is the line from the gonion (G) to the junction (O) of the intersecting vertical line along the anterior border of the ramus and the horizontal line on the alveolar crest because of the thin anterior distance (AD) between the buccal surface of the mandible and the outer wall of the mandibular canal. The resection line should not be above 17.5 mm at the GO line to ensure a safe inferior distance, the distance between the inferior border of the mandible and the floor of the mandibular canal (21.6 +/- 4.1 mm). The body of the mandible was less vulnerable to injury to the inferior alveolar nerve in ASO because of the relatively thicker AD at the second molar (8.3 mm) and first molar (6.8 mm). Pilot surgery was performed in five cadavers. The lateral cortex was safely split off, avoiding injury to the inferior alveolar nerve, and angle ostectomy was then done. This method was applied in two clinical cases without any complications. The "split ostectomy of mandibular body and angle reduction" is a new and safe method of avoiding the injury to the inferior alveolar nerve.

Adult↗
PubMed2004

Blepharoptosis caused from compression of levator muscle by fractured orbital roof fragment.

The authors report two cases of blepharoptosis caused by compression of the levator muscle by fractured orbital roof fragment; both were improved by surgical treatments. In one case, because neurosurgeons were concerned with the contusional hemorrhage of the right frontal lobe during the early admission period, they missed the orbital roof fracture. The patient underwent surgery on the 18th post-trauma day. In the other case, the early diagnosis was made, and the surgical treatment were performed on the 10th post-trauma day. The authors think if the blepharoptosis is not improved in several days and the fractured fragment is suspected to compress the levator in computed tomography scan, surgical decompression is necessary and should be performed as soon as possible.

Adult↗
PubMed2004

Multiple malignant melanomas at different burn scar areas: a case report.

BACKGROUND: Malignant changes in burn scars occasionally develop, the majority being squamous cell carcinoma. Malignant melanomas (MMs) arising in burn scars occur rarely. OBJECTIVE: To present the case of a patient with a multiple MM developed at different burn scar areas. METHODS: A case report and review of literature are given. RESULTS: One was a large pigmented nodular lesion with central ulceration on right flank. It was widely excised and revealed lentigo MM. After that, we took notice another small pigmented lesion on right arm. It was also reported lentigo MM. CONCLUSION: This case provided a valuable lesson. Another kind of tumor may be present even if one tumor is found by pathologic observation, especially in burn scar patients. Clinicians should carefully observe burn scars, chronic ulcers, and other pigmented lesions.

Burns↗
PubMed2003

Growth difference of multilayer onlay cartilage grafts in rabbit ears.

Successful survival and growth of autogenous cartilage graft has been well proved in the experimental studies of Dupertuis and Peer. However, it is still unknown whether multilayer cartilage graft has the same survival and growth as a single-layer graft. The authors studied any difference of survival and growth rate between single and multilayer cartilage grafts in rabbits. Single, double, and triple layers of autogenous cartilage grafts were inserted into three separate pockets in a single rabbit ear. The three grafts were left in place for 6 months. They performed this procedures in 10 rabbit ears. Proliferating activity of chondrocytes was measured with a method of proliferating cell nuclear antigen immunolabeling. The authors found that there were more proliferating cell nuclear antigen-positive cartilage cells in the graft than in the host bed, but no difference in weight and thickness of the graft among the three groups.

Animals↗
PubMed2003

Innervation of calf muscles in relation to calf reduction.

Plump and muscular calves, a so-called radish-like leg, embarrass young women and cause a feeling of inferiority in Korea. Damage to motor nerves innervating a muscle makes the muscle paralyzed and dystrophic, with loss of muscle volume. The authors studied the morphometry of the motor branches of the tibial nerve innervating the gastrocnemius and soleus muscle and sensory medial sural cutaneous nerve in popliteal fossa. Dissection and exploration of the tibial nerve were performed in the popliteal fossae of 70 legs (of 18 males and 17 females) of embalmed Korean cadavers. The main branch of the tibial nerve innervating medial and lateral gastrocnemius muscle originated 3 cm above and below the popliteal crease. The medial gastrocnemius muscle had an additional nerve (49%). The medial sural cutaneous nerve came off the nerve into the medial gastrocnemius muscle (30%) and diverged 5.5 mm from the tibial nerve. The nerve into the soleus muscle originated from the nerve innervating the lateral gastrocnemius muscle (30%) and was 12.3 mm away from it. Surgeons should keep in mind that the medial sural cutaneous nerve originates from the nerve to medial gastrocnemius in 30% and the nerve to soleus muscle originates from the nerve to lateral gastrocnemius in 30%.

Cadaver↗
PubMed2002

Pseudomelanoma after laser therapy.

An 18-year-old man had a melanocytic nevus on the chin that had been treated with three different lasers at a private clinic for 2.5 years. This lesion was excised and sent to a pathologist. The initial histological diagnosis was reported as compound nevus coexistent with changes suspicious of malignant melanoma. The reevaluation of histology together with the clinical information that the lesion had been pretreated with laser resulted in a revised diagnosis of pseudomelanoma. It is important to be aware of this benign pseudomelanoma, which can arise as a complication of laser therapy, to avoid subjecting patients to unnecessary surgical procedures or other forms of adjuvant treatment.

Adolescent↗
PubMed2002

Identity of "orbitozygomatic muscle".

Our exploration disclosed 17 (40%) stranded muscles of 42 hemifacial specimens of Korean cadavers. We name this distinct muscle "Orbitozygomatic Muscle (OZM)" that is either an aberrant orbicularis oculi muscle or a separate muscle. A triangular space bounded superiorly by the lowest edge of the orbicularis oculi muscle (OOM), laterally by Zygomaticus Minor, and inferiorly by OMZ gives way to neurovascular bundle and suborbicularis oculi fat pad (SOOF).

Adult↗
PubMed2002

Roberts syndrome, normal cell division, and normal intelligence.

Roberts-SC phocomelia syndrome (RS) is an autosomal recessive disorder of symmetric limb defects, craniofacial abnormalities, pre- and postnatal growth retardation, and mental retardation. Patients with RS have been reported to have premature separation of heterochromatin of many chromosomes and abnormalities in the cell-division cycle. No case has been reported who had normal intelligence and normal cell division with typical clinical features of the RS. We report a case of a six-year-old male of clinical and radiologic findings of typical RS with normal cell division and normal intelligence. Although he showed growth retardation, his intelligence was normal. Van Den Berg and Francke later reported that 79 out of 100 cases of Roberts syndrome had premature cell separation (PCS). We think that this case may demonstrate severe expression of the Roberts syndrome even though PCS is not exhibited. The limb involvement of this case was symmetrical, and he showed phocomelia of upper limbs, equinus valgus deformity of ankle, aplasia of fibula, and shortness of fifth toes while his hands and feet were normal with 5 rays each. Craniofacial abnormalities of this case were typical; he showed scaphocephaly, mild hypertelorism, mandibular hypoplasia, dysplastic helix of ear, narrowing of external auditory canal, and cleft palate with wide gap. This report supports the theory that normal intelligence can make social-personal adjustment possible even if all of the stigmata of Roberts syndrome is present.

Arm↗
PubMed2002

Treatment of condyle fracture caused by mandibular angle ostectomy.

A prominent mandibular angle is considered to be unattractive in Asian countries because it gives the face a square and muscular appearance. Successful correction by angle ostectomy has been reported, but one of the serious complications of angle reduction ostectomy is fracture of the mandibular condyle. If the ostectomy line is misdirected vertically, the condyle may be fractured. The authors experienced two cases of condylar fracture during angle reduction. Case 1 was a pulled-out condylar fracture, where an L-shaped miniplate was then attached by external approach, and intermaxillary fixation (IMF) with arch bar was used on postoperative day 14. With release of the IMF, a systematic approach for a jaw-opening exercise was begun. On postoperative day 21, the elastics were placed to assist in guiding protrusion of the mandible anteriorly 24 hours a day. After postoperative day 28, it was possible to completely abandon daytime elastic fixation. The exercise was modified to lateral movement. Case 2 was green-stick condylar fracture, with the IMF with arch bar applied on postoperative day 10. After releasing the IMF, the exercise involved the daily use of several tongue blades, and range of motion increased by wedging additional blades until postoperative day 21. More aggressive stretching was continued with 22 blades on postoperative day 28. On the removal of the arch bar, the occlusion was stable and followed by more aggressive stretching and physical therapy. Both cases were successfully restored and had good results. The authors believe the exercise protocols and algorithms they used may serve as a standard procedure of treatment in condylar fracture caused by angle ostectomy.

Adult↗
PubMedDate not supplied

Foot polydactyly and polysyndactyly: genetic implications in two families.

The purpose of this study was to determine the genetic characteristics of foot polydactyly and identify its inheritance pattern by analyzing familial pedigree. Five cases from 2 Korean families were studied: 1 is a family whose members have been affected for 4 generations and the other for 2 generations. Using peripheral blood samples, we performed chromosomal analysis using the banding technique with Giemsa stain and karyotyping. We investigated the shape and structure of 46 chromosomes, looking for translation, deletion, inversion, ring chromosome, and isochromosome abnormalities. All peripheral blood samples demonstrated no chromosomal abnormalities, though the genetic nature of foot polydactyly and a new genetic locus was identified recently by other studies. Familial pedigree analysis suggested that polydactyly was inherited as an autosomal dominant trait in the first family. The mode of inheritance for the second family could not be determined due to an insufficient number of family members. The result of this study brought us to the conclusion that, while genetic factors play a major role in polydactyly, other factors may contribute to its occurrence.

Adult↗