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Biomedical subjects

I Sari

Publications and source records attributed to I Sari.

At least 19 recordsLinked to original sources
PubMed2006

A case representing coexistence of acute myeloblastic leukemia and dedifferentiated liposarcoma: the possible role of chemotherapy in triggering dedifferentiation.

Acute myelogenous leukemia (AML) is a hematological disorder that is characterized by an abnormal proliferation of immature myeloid cells. Dedifferentiated and well-differentiated liposarcomas are the two pathological subtypes of liposarcoma, based on the WHO classification. Transition from well-differentiated to dedifferentiated liposarcoma is a well-recognized phenomenon. Well-differentiated tumors are known to have low malignancy grade. However, when dedifferentiation occurs, the tumor acquires the aggressive features of a fully malignant lesion. This process largely is believed to progress in a time-dependant manner; however, time is not the only factor of importance. The potential roles of other factors in this transition are still unclear. To date, the coexistence of AML and liposarcoma has not been reported in the literature. In this paper, we report on a case of coexistence of AML and liposarcoma, and on the unusual behavior of a well-differentiated tumor after dedifferentiation occurs.

Abdominal Neoplasms↗
PubMed2006

Histiocytic necrotizing lymphadenitis (Kikuchi-Fujimoto's disease) mimicking systemic lupus erythematosus: a review of two cases.

Kikuchi-Fujimoto's disease (KFD), or histiocytic necrotizing lymphadenitis, is a benign and self-limited lymphadenitis commonly found in young women. It often shares clinical features with systemic lupus erythematosus (SLE), such as arthralgias, fever and leukopenia. The etiology of KFD remains unknown and controversial. Clinical course is favorable, with spontaneous remission in less than four months in almost all cases. Herein, we present two cases. The former is a 53-year old woman presenting with cervical lymphadenopathy, arthralgia, pancytopenia and positive antinuclear antibody (ANA). Lymph node biopsy revealed histopathological features compatible with Kikuchi-Fujimoto histiocytic necrotizing lymphadenitis. The latter patient was a 20-year old woman presenting with left cervical lympadenopathy, a butterfly rash that was reminiscent of SLE, and a positive antinuclear antibody. Based upon clinical, histological and laboratory findings, the diagnosis of SLE was excluded. Careful attention should be paid to differentiating between KFD and SLE, because of their similar presentations, yet different clinical courses and therapeutic requirements.

Adult↗
PubMed2005

Impaired endothelial function in patients with ankylosing spondylitis.

OBJECTIVE: In recent years, accelerated atherosclerosis and increased risk of cardiovascular events have been described in patients with rheumatic disease, particularly for rheumatoid arthritis and systemic lupus erythematosus. However, the link between inflammation, atherosclerosis and ankylosing spondylitis is controversial. We evaluated the degree of atherosclerosis and endothelial function of ankylosing spondylitis patients ultrasonographically. METHODS: Fifty-four patients with ankylosing spondylitis (37 +/- 11 yr, 29 males, 25 females) and 31 healthy controls (35 +/- 9 yr, 16 males, 15 females) were consecutively enrolled in the study. Serum lipids, creatinine, glucose, and acute-phase proteins were assessed. The Bath Ankylosing Spondylitis Metrology Index (BASMI), Bath Ankylosing Spondylitis Functional Index (BASFI) and Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) were also evaluated. Flow-mediated dilatation and endothelium-independent dilatation of the brachial artery and intima-media thickness of the common carotid artery were measured sonographically. RESULTS: Left, right and averaged intima-media thickness of the common carotid artery did not show a statistically significant difference between the ankylosing spondylitis and control groups. However, flow-mediated dilatation was significantly lower in the ankylosing spondylitis patients (14.1 +/- 6.7 vs 17.6 +/- 8%; P = 0.03). Likewise, nitroglycerin-induced dilatation was lower in the patient group, but the difference was not significant (16.4 +/- 6.8 vs 19.8 +/- 10%; P = 0.07). No correlation was detected between flow-mediated dilatation and age, sex, serum lipids, CRP, ESR, smoking habits and disease activity scores. Intima-media thickness of the common carotid artery was positively correlated with age and BASMI score (r = 0.55, P = 0.00; r = 0.22, P = 0.04, respectively). CONCLUSION: This study demonstrates impairment of endothelial function in ankylosing spondylitis.

Adult↗
PubMed2005

Familial nodular lymphocyte predominant Hodgkin lymphoma: Successful treatment with CHOP plus rituximab.

Nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) is a rare tumor type distinct from classical Hodgkin lymphoma and its familial form is unusual. The two cases (mother at age 48 and son at age 30 years) of NLPHL in advanced clinical stage are described. The patients were successfully treated with an immunochemotherapy schedule consisting CHOP plus rituximab (CHOP-R). This chemotherapy was well tolerated and the patients reached complete remission. These remissions were for 34 and 40 months for mother and son, respectively. In patients with NLPHL, CHOP-R regimen should be used as an alternative treatment regimen to obtain a good long-lasting response without any adverse events.

Adult↗
PubMed2004

Long-term pulmonary histopathologic changes in rats following acute experimental exposure to chlorine gas.

In this study, we aimed to investigate the long-term histopathologic changes in the lungs of rats exposed to a high concentration of chlorine gas. Twenty-four Sprague-Dawley rats were divided into three groups: the control group (group I) (n = 8), early-examined group (group II) (n = 8), and late-examined group (group III) (n = 8). In group II the lungs of rats were taken out just after the exposure, whereas in group III the lungs were taken out 45 days after the exposure. Eosinophilic liquid accumulation in alveoli and bronchi, diffuse intraalveolar edema, vascular congestion, severe perivascular edema, and free bleeding in intraalveolar and interstitial area were observed in the lungs of rats in group II. Interstitial fibrosis and thickening of the alveolar septa were observed in group III. These findings suggest that the people using these cleaning agents are at risk of harming themselves, and the victims of chlorine gas injury should be reexamined at a later period since they may have pulmonary damage even after 45 days of exposure.

Administration, Inhalation↗
PubMed2004

Endometriosis in the Bartholin gland.

A case of endometriosis infiltrating the Bartholin gland is presented. The initial diagnosis was a Bartholin gland cyst. The clinical diagnosis was made during the operation when chocolate-colored fluid poured into operation field. Laparoscopy was done during the same operation and minimal endometriosis was found. The presence of endometriosis may be considered as a diagnosis in cases with cystic mass in the Bartholin gland and laparoscopy might be performed to rule out the presence of intraperitoneal endometriosis if a woman is infertile.

Adult↗
PubMed2004

Effect of nicotine exposure during gestation on neonatal rat crystalline lenses.

PURPOSE: To assess histologically the influence of maternal nicotine exposure during gestation in vivo on crystalline lenses in neonatal rats using different dosages of the test compound simulating the range of low, moderate, and heavy smokers in humans. METHODS: Experimentally naive, adult female Wistar-albino rats (200-250 g) were mated with adult male rats over 2 days for copulation in the proportion of two females for every male animal. After confirming pregnancy with vaginal smear method, 40 gravid rats (dams) were then randomly assigned into four equal groups (three experimental and one control; n=10 in each). Groups 1, 2, and 3 experimental dams were treated with intraperitoneal (i.p.) (-)-nicotine tartrate at doses of 0.5, 1, and 2 mg/kg body weight/day, respectively, during pregnancy from gestational days 9 through 21. Group 4 control dams were given i.p. saline solution daily for the same period. After normal delivery, the eyes were removed at postnatal day 1 or day 30 for macroscopic and histopathologic investigation of the lenses. RESULTS: Control and group 1 litters had normal anterior lens capsules with a single layer of anterior cuboidal epithelial cells, regularly orientated cortical and nuclear lens fibres, and a clear posterior lens capsule with no lining epithelial cells behind the equator. On the other hand, some lenses in groups 2 and 3 litters had mature or immature cataract macroscopically at postnatal 30th day. Histopathologic findings suggesting cataractogenesis included cortical lens fibre cell swelling and liquefaction, prominent epithelial cells lining the posterior lens capsule behind the equator, and the retention of lens nuclei into the deeper and central area. Moreover, some lenses were immature developmentally, indicating arrested lenticular embryogenesis at vesicle stage. CONCLUSIONS: Nicotine exposure during pregnancy has teratogenic and cataractogenic effects on developing crystalline lenses in neonatal rats both macroscopically and histopathologically. If appropriate dose of nicotine can be identified, nicotine-induced cataract formation may possibly be used as a new experimental cataract model in animal studies. Therefore, future studies are needed in this respect. Eye (2004) 18, 67-73. doi:10.1038/sj.eye.6700511

Abnormalities, Drug-Induced↗
PubMed2004

The relationship between expression of p53/bcl-2 and clinicopathological criteria in endometrioid adenocarcinomas of the endometrium.

OBJECTIVE: Thirty patients with endometrioid adenocarcinomas of the endometrium who had undergone total abdominal hysterectomy and bilateral salpingo-oophorectomy were reviewed histopathologically. MATERIALS AND METHODS: Tissues were stained immunohistochemically with p53 and bcl-2, respectively. Ten cases were selected as grade 1, ten cases grade 2 and ten cases grade 3. RESULTS: We observed 14 cases (46.6%) of bcl-2 and four cases (13.3%) of p53 positivity; p53 expression showed an opposite correlation to bcl-2 staining, estrogen and progesterone. CONCLUSION: We observed a decrease in bcl-2 reactivity and an increase in p53 positive staining as the histological differentiation worsened.

Adult↗
PubMed2003

The relationship between expression of p53/bcl-2 and clinicopathological criteria in cervix squamous cell carcinomas.

OBJECTIVE: Thirty cases with squamous carcinomas of cervix who underwent total abdominal hysterectomy and bilateral salphingo-oopherectomy were reviewed histopathologically. MATERIALS AND METHODS: The tissues were stained immunohistologically with p53 and bcl-2. Ten cases were selected as well differentiated (large cell keratinizing) carcinoma, ten cases moderately differentiated (large cell non keratinizing) carcinoma and ten cases poorly differentiated carcinoma (includes small cell squamous cell carcinoma). RESULTS: We observed 11 cases (36.6%) with bcl-2 and 13 cases (43.3%) with p53 positivity. P53 expression showed the opposite correlation to bcl-2 staining. CONCLUSION: A decrease in bcl-2 reactivity and an increase in p53 positive staining was noted as the histological differentiation worsened.

Aged↗
PubMed2002

Paget's disease of the esophagus.

We describe the case of a 72-year-old male patient who was suffering from Pagetoid spread to the esophageal mucosa from adenocarcinoma located in the distal esophagus and proximal stomach. Esophageal Paget's disease is rare. The histogenesis of extramammary Paget's disease has remained controversial. In the majority of cases, it originates from a primary esophageal tumor. In this report, we describe a patient who was suffering from esophageal adenocarcinoma and discuss the origin of extramammary Paget's disease in the light of the literature.

Adenocarcinoma↗
PubMed2002

Superior vena cava syndrome caused by chemotherapy-induced fibrosis.

We report a case of a 51-year old man with small cell lung cancer who developed superior vena cava syndrome due to obstruction of the superior vena cava at the junction of the brachiocephalic vein by a fibrotic band, 2 months after completing six cycles of chemotherapy with cisplatin and etoposid. Superior vena cava syndrome caused by chemotherapy-induced pulmonary fibrosis should be kept in mind during follow-up.

Antineoplastic Combined Chemotherapy Protocols↗
PubMed2002

Early diagnosed intramural ectopic pregnancy associated with adenomyosis: report of an unusual case.

Intramural pregnancy is the rarest type of ectopic pregnancy and almost always is diagnosed intraoperatively. It constitutes less than 1% of ectopic pregnancies and the world literature contains only 33 cases. We present an additional case of an uncomplicated intramural pregnancy in a patient with extensive adenomyosis, which is the earliest preoperatively diagnosed (sixth week of gestation) case in the literature.

Adult↗
PubMed2001

Effect of granulocyte-macrophage colony-stimulating factor on treatment of acute osteomyelitis. An experimental investigation in rats.

Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a cytokine that affects the various developmental steps of hematopoietic cells and enhances the phagocytic activity of these cells. The effect of GM-CSF on acute osteomyelitis, developed in rats, was investigated. For this purpose, osteomyelitis was firstly developed through the direct inoculation of Staphylococcus aureus into rat tibial metaphysis. Twenty-four rats in which diagnosis of osteomyelitis was histopathologically established were divided into two groups. Antibiotic only was given to the first group, and antibiotic as well as GM-CSF to the second group. Rats were followed up for 3 months with plain radiographs and scintigraphic methods using 67Ga-citrate. Material obtained from the rats that had been killed at the end of the 3rd month were histopathologically investigated. One rat in the first group died. In another rat, chronic osteomyelitis developed and fracture was observed. In 12 rats of the second group, physical examination, plain radiographs, and histopathologic findings were normal. In scintigraphic studies with 67Ga-citrate, when the pre- and posttreatment value of the same groups were evaluated by the Mann-Whitney U-test, the mean values at 48 h after treatment were found to be significant (P < 0.05), indicating a decrease in the 2nd group (experimental group). In conclusion, the antibiotics were effective in the elimination of infection only together with neutrophils. In this manner, infections may be eliminated by strengthening the host's defense mechanism as well as by administering antibiotics. We believe that an adequate number of long-term studies will shed light on this issue. Besides we consider that this factor will be more important in the study of chronic osteomyelitis.

Acute Disease↗
PubMed2001

Localized pleural malignant mesothelioma.

Pleural malignant mesothelioma (PMM) is a rare tumor and it is commonly seen in the form of multiple nodules or a diffuse tumor. A localized tumor mass in the pleura is extremely rare. Only seven cases have been reported. In this report, we present an additional case of localized PMM and describe the immunohistochemical and flow cytometric findings. A 61-year-old woman, without a history of smoking or asbestos exposure, presented with a severe pain in her right shoulder and arm. Chest radiography showed a solitary mass in the right upper lung field. Computed tomography showed a 5 cm right upper lung mass. Magnetic resonance imaging showed that the mass extended to the wall of the thorax. The patient underwent surgery for total removal of the tumor. Pathology revealed a localized malignant mesothelioma. Immunohistochemical analysis showed that the tumor was strongly and diffusely positive for cytokeratins with high and low molecular weight, and focally positive for vimentin and epithelial membrane antigen (EMA), but it was negative for carcinoembryonic antigen, Factor VIII, alpha-fetoprotein and Leu-M1. Flow cytometry showed an aneuploid DNA content in the tumor. The final diagnosis was localized malignant mesothelioma (epithelial type). The patient showed signs of local recurrence 5 months after surgery, and radiotherapy was given.

Aneuploidy↗
PubMed2001

Facilitated tissue expansion with topical estriol.

Tissue expansion is a helpful technique in reconstructive plastic surgery. Unfortunately, tissue expansion still needs to be improved. Twenty-four male Wistar rats were used to evaluate the effect of estriol on tissue expansion. The agents hyaluronidase, estriol, and base cream (as a control) were applied topically to separate animal groups for 5 weeks, and their effects were studied on tissue expansion. Both hyaluronidase (p < 0.05) and estriol (p < 0.001) enhanced the rate of expansion when compared with control animals. Estriol was more effective than hyaluronidase (p < 0.05). Breaking strengths were measured in the estriol and the control groups. Breaking strength was not evaluated in the hyaluronidase group because of the necrotic changes seen at the end of the fifth week. The breaking strength was higher in the control group than in the estriol group (p < 0.05). The authors suggest that topical estriol be used as an adjunctive agent to facilitate tissue expansion.

Administration, Topical↗
PubMed2001

The relationship between expression of p53/Bcl-2 and histopathological criteria in breast invasive ductal carcinomas.

Seventy-five cases of invasive ductal carcinoma (IDC) on whom axillary lymph node dissection and mastectomy were performed between 1996 and 2000 were reviewed histopathologically. The slides were stained immunohistologically with p53 and Bcl-2. In 40 cases we observed 53% Bcl-2 and 69% p53 positivity. There were correlations between p53 and tumour grade, and also between p53 and Bcl-2. We did not observe any connection between the main histopathological prognostic factors--lymph node metastasis, tumour size, tubule formation, pleomorphism--and p53/Bcl-2. In our study, IDC with a high mitotic index and poor differentiation showed mutant p53 positive staining. Expression of Bcl-2 is associated with low nuclear grade and absence of mutant p53. This study was designed to reveal the correlation between histopathological findings and the expression of p53/Bcl-2 on prognosis.

Adolescent↗
PubMed2000

Spinal subdural tuberculous abscess.

OBJECTIVES: Spinal subdural abscess is rare and only 48 cases have been described to date. In this report, we present an additional spinal subdural tuberculous abscess. METHOD: Tuberculous meningitis was diagnosed with clinical and laboratory findings in a 45-year-old man. A spinal subdural abscess was demonstrated using MRI. Presence of the abscess was revealed by surgical intervention. The diagnosis was confirmed by pathological examination. RESULTS: The patient had been treated for tuberculous meningitis 2 years previously. The disease recurred when anti-tuberculous therapy was prematurely discontinued. During the second treatment, the patient also underwent a ventriculo-peritoneal shunt operation for hydrocephalus. Dizziness and weakness of both legs developed after the postoperative period. Spinal MRI showed a spinal subdural abscess as a iso-intense mass with spinal cord in the T1 and T2 weighted images, ring like enhancement and compression on the spinal cord at T3-T4 level. The patient underwent surgery and the abscess was drained. CONCLUSION: Tuberculosis may cause a spinal subdural abscess and although it is a rare disorder, when encountered MRI is very useful in the diagnosis.

Abscess↗