Analysis of Clinicopathologic Features of Papillary Thyroid Microcarcinoma According to Cut-off of Tumor Size / 대한내분비외과학회지

PURPOSE: Although the detected incidence of papillary thyroid microcarcinoma (PTMC) has increased with development of ultrasonography and fine-needle aspiration biopsy, the best treatment has not yet been established. Treatment decisions require information on many factors including lymph node metastasis, extrathyroidal extension, and bilaterality. With this aim, the present study analyzed clinicopathologic features of PTMC according to cut-off of tumor size. METHODS: The clinicopathologic features of patients with PTMC between January 2007 and December 2009 were reviewed retrospectively from medical records. Patients were divided according to tumors lesser than or equal to cut-off (Group I) and tumors exceeding cut-off (Group II). RESULTS: Both capsule invasion and lymphovascular invasion were significantly different at all cut-off diameters (5~9 mm). Central node metastasis revealed a difference in all cut-off values except 8 mm. Extrathyroidal extension differed at all cut-off values except 5 mm. Bilaterality displayed a statistically significantdifference only at the 8 mm cut-off. CONCLUSION: cut-off of 5 mm represents a safe value to discriminate less aggressive from aggressive treatment for PTMC.

Postanal Retrieval and Anastomosis in Laparoscopic Rectal Surgery: Report of 3 Cases

Laparoscopic surgery is popular and widely accepted method for colorectal cancer today. Especially in rectal cancer, laparoscopic TME made surgery safe and feasible with good outcome. But there are still some limits and difficulties in resection and anastomosis of low rectal cancer. We combined laparoscopic TME and posterior approach. Surgery was performed in three low rectal cancer patients. They were prepared in supine position and laparoscopic TME to pelvic floor muscles was performed. After changing the patient to Jack-knife position, post-anal median incision (between the external sphincter and coccyx) and distal rectal resection was done. Through this surgical window, proximal stump was retrieved and resected with the safety margin, and anastomosis with leak test was performed. After a drain keeping, patient's position was changed back to supine again and laparoscopic irrigation and inspection of operation field was done finally. In the course of recovery, two patients were uneventful, but the rest with FAP experienced postoperative anastomotic leakage and got perineal resection and permanent ileostomy. According to our experience, posterior approach after laparoscopic TME permit right angle resection of distal rectum which is difficult in laparoscopic transabdominal approach. In addition, manual anastomosis with various instruments, Lembert suture, easy drain keeping, accurate fibrin glue apply can also be achieved. No incision on abdomen adds cosmetic advantage. But frequent position changes, need of patience-demanding intracorporeal mesenteric dissection to anastomotic site, and wound discomfort during sitting position right after the operation remain as challenges to consider and solve.

A Case of Parathyroid Carcinoma

Parathyroid carcinoma is a rare disease and its incidence has been reported to be 0.5-5% of all primary hyperparathyroidism cases. Compared to adenoma, parathyroid carcinoma shows higher levels of serum calcium and parathyroid hormone. When there is evidence of generalized bone disease along with the involvement of a neck mass in the hypercalcemic patient, parathyroid carcinoma should not be ruled out. The histological characteristics of malignant cells include nuclear pleomorphism, an increase in Nucleus/ Cytoplasm (N/C) ratio, hyperchromatism, abnormal mitosis and prominent nucleoli. Furthermore, malignat cases involve capsular and vascular invasion as well as metastasesis to the lungs, cervical lymph nodes and bones. The biological behavior of parathyroid carcinoma seems to be variable with a wide range of malignancy. Surgical excision is the first therapeutic option. In this paper, we report and review our experience in a case of parathyroid carcinoma in a 66- year-old female with hypercalcemia, ureteral stones and a neck mass.

amenorrhea with Ovarian Failure / 대한내분비학회지

No abstract available.

Influence of Early Age at Menopause on Bone Mineral Density and Biochemical Bone Marker / 대한내분비학회지

BACKGROUND: Among the various factors affecting bone mass and bone metabolism, aging and menopause play a major role. After the disappearance of the menstrual cycle, estrogen deficiency is the most important factor in bone loss. It is still unclear whether women with early menopause have a rate of bone loss different from women whose menopause has occurred later. Various biochemical bone markers are increased after menopause but it is still unclear whether women with early menopause have biochemical bone markers different from women whose menopause has occurred later. The aim of this study was to establish whether healthy women with early or normal menopause have different bone mass, biochemical bone markers and rates of bone loss. METHODS: Postmenopausal healthy women were divided into two groups according to their age at menopause(AAM): one group with AAM > 43 years, and the other group with AAM 50 years. Bone mass was measured using a dual energy X-ray absorptiometry(DEXA) in the lumbar, femur neck, femur trochanter, and Wards triangle. Serum levels of bone alkaline phosphatase and osteocalcin, and urine levels of calcium, deoxypyridinoline and type I collagen N-telopeptide were measured using a commercial kit. RESULTS: Age and body mass index in the early menopause group were different from those in the normal menopause group. All the bone mass and the biochemical bone markers in the early menopause group were not different from those in the normal menopause group. We selected 15 subjects from the two groups matched by age and BML Bone mass of femur neck in the early menopause group was lower than in the normal menopause group matched by age and BMI. Bone mass in lumbar, femur trochanter, and Wards triangle was lower in the early menopause group than in the normal menopause group, but the difference between the two groups was not significant. After adjusting years since menopause, we didnt find the difference of bone mass between the two groups. All the bone biochemical markers were not different in the two groups matched by age and BMI. CONCLUSION: Our data suggest that women with early menopause dont lose bone faster than women with normal menopause.

A Case of Rhino-orbital Mucormycoses with Orbital Apex Syndrome in Diabetic Patient / 대한내분비학회지

Rhino-orbital mucormycosis is a rare fungal infection that involves paranasal sinus and orbits and usually presented as acute invasive fungal sinusitis or orbital apex syndrome. It often occurs in patients with poorly controlled diabetes mellitus especially during or following episode of diabetic ketoacidosis. If the condition is not treated, the fungal infection may disseminated into the brain and death usually occurs in a day to week. Exenteration is often needed as a therapy. We have experienced a case of rhino-orbital mucormycosis that presented as a orbital apex syndrome and confirmed by maxillary and periorbital soft tissue biopsy. A 56-year-old female suffered from diabetes mellitus for 3 years was admitted with rapidly progressive visual acuity loss and left hemi-facial numbness. She was treated with daily intravenous amphotericin B and intraconal amphotericin B irrigation and packing. Exenteration was not neccisated.

The Effect of Sex Steroid Hormone on the Expression of Insulin-Like Growth Factor Binding Preteins mRNA in the Explant Cultured from Human Uterine Myoma and Adjacent Normal Myometrium / 대한내분비학회지

BACKGROUND: Sex steroid hormones are believed to play an important role in the genesis and growth of uterine myoma. Several studies suggest a possible role of insulin-like growth factor(IGF) as a mediator of estradiol in uterine myama. We have recently demonstrated that some IGF binding proteins(IGFRPs) messenger ribonucleic acid(mRNA) expressions in myoma are dependent on the in vivo esttogen status. The purposes of this study are to evaluate the in vitro effects of sex steroid hormones including estrogen on the IGFBPs gene expression in tissues from uterine myoma and adjacent normal myometrium. METHODS: Tissues from myoma and adjacent normal myometrium of patients with uterine myoma during early proliferative phase of menstrual cycle were cultured in the absence(control) and presence of 17b-estradiol(10M/L) or/and progesterone(10M/L) for 3 days. The IGFBPs mRNA expressions in these explants were analyzed by Nothern blot using specific human complementary deoxyribonucleic acid(cDNA) probes. RESULTS: The addition of 17b-estradiol, progesterone alone and in combination to conditioned media of explants from myoma and adjacent normal myornetrium did not result in any changes in the expression of IGFBP-2, IGFBP-4, IGFBP-5, and IGFBP-6 mRNA. With progesterone addtion, lGFBP-3 rnRNA expression was significantly reduced in myoma explant but not in adjacent ncemal myometrium explant. There was no significant change in the IGFBP-3 mRNA expression with 17b-estradiol and with the combination of both 17b-estradiol and progesterone. CONCLUSION: 17b-estradiol does not affect IGFBPs gene expression in the myoma and adjacent normal myometrium explant regardless of the presence of progesterone in vitro. However progesterone alone induces a decrease in IGFBP-3 synthesis in myoma explant.