Meningiomas are one of the most common tumours to affect the central nervous system. Genetic muta... more Meningiomas are one of the most common tumours to affect the central nervous system. Genetic mutations are important in meningeal tumourigenesis, progression and prognosis. In this study, we aimed to examine the effect of 1p/19q deletion on the diagnosis and prognosis of meningioma subtypes using the fluorescence in situ hybridization (FISH) method. Twenty-four patients with meningioma were retrospectively studied. Tumour samples were obtained from 10 typical, 11 atypical and three anaplastic malignant meningiomas. The most representative tumour sections were screened for 1p/19q deletion using the FISH method. Of the 24 patients, eight were women (33.3%) and 16 (66.7%) were men. The mean age was 56.6 years. The higher-grade meningioma was usually seen in males and had a higher rate of deletion on 1p (p = 0.001). There was a statistically significant difference between the grades and the rate of deletion on 19q (p = 0.042) and between the grades and the rates of polysomy, monosomy an...
In this study we aimed to evaluate the usability of calretinin staining in the diagnosis and excl... more In this study we aimed to evaluate the usability of calretinin staining in the diagnosis and exclusion of HD in 36 rectal biopsies. Through immunohistochemical examination, in of a total of 21 pediatric patients in whom ganglion cells were detected in first rectal biopsies and in re-biopsies, ganglion cells were seen through nuclear and cytoplasmic staining. In the lamina propria and superficial submucosa, staining of nerve fibers was detected in a granular pattern in varying intensities. Out of a total of 5 biopsies (including one re-biopsy) of non-HD patients, where ganglion cells could not be seen, the nerve fibers were all stained. On the other hand, in 10 HD patients, diagnosed by a colon pull through operation, calretinin staining was not detected in any area of the rectal biopsies except for the mast cells. We conclude that calretinin immunostaining for the diagnosis of HD is an easy and reliable method for use in daily practice.
Pituitary adenomas are the third most common intracranial tumors. Invasive adenomas account for o... more Pituitary adenomas are the third most common intracranial tumors. Invasive adenomas account for only 0.1-0.2% of pituitary tumors. SPARC is a matrix glycoprotein that plays a role in progression and invasiveness of neoplasms. In this study, we examined the potential role of SPARC in invasive pituitary adenomas. Forty pituitary adenomas have been examined with histopathological and immunohistochemical techniques. The cohort has been classified into two groups as invasive (n = 25) and non-invasive (n = 15) utilizing the Hardy classification. Formalin fixed tissues have been stained with hematoxylin eosin. Ki-67, p53, and SPARC monoclonal antibodies have been used. We did not detect any significant difference on Ki-67, SPARC, and p53 expression patterns correlating with the pathological subtype or invasiveness. Only 24% of invasive adenomas had Ki-67 levels over 1%. A total of 67.7% non-invasive adenomas had Ki-67 levels below 1%. We did not detect any relation between SPARC levels and invasiveness of pituitary adenomas. Absence of significant SPARC expression in tumor progression, sellar dilatation, erosion and destruction suggest that SPARC scores are not related with invasiveness or progressiveness of pituitary adenomas.
Congenital cranial teratomas are a well-recognized but infrequent entity and are usually characte... more Congenital cranial teratomas are a well-recognized but infrequent entity and are usually characterized by complete loss of the normal intracranial architecture. They contain tissues from all three germ layers. This review presents the clinical features, diagnostic methods and management of cranial teratomas based on our experience and the literature. Material and methods: Four pathologically proven cases of congenital cranial teratomas were reviewed. One case was diagnosed prenatally, and the others were diagnosed postnatally. While CT and MRI had been performed in all patients, ultrasonography was only performed in one patient. Craniofacial mass, macrocephalus and/or hydrocephalus were the prominent findings. Localized neurological deficits were not observed even with very large tumors. In all patients, the mass was totally removed, and a ventriculoperitoneal shunt was performed in two patients who had hydrocephalus. Histological examination demonstrated a variety of tissues from a...
for approximately 0.2% of all genital tract malignancies.1 Although their incidence is approximat... more for approximately 0.2% of all genital tract malignancies.1 Although their incidence is approximately 2 per million women, the incidence of endometrial cancer is 700 per million women.2 It is composed of cells closely resembling normal proliferative endometrial stromal cells. The tumor is classified into a low-grade endometrial stromal sarcoma (LGESS) and high-grade endometrial stromal sarcoma (HGESS) based on mitotic rate. Nuclear atypia or pleomorphism is not demonstrated in LGESS which has less than 10 mitoses per 10 high-power fields (HPF). HGESS is characterized by more than 10 mitoses per 10 HPF and shows a more aggressive be-
Primary adrenal leiomyosarcoma is extremely rare tumor. We report a case with adrenal leiomyosarc... more Primary adrenal leiomyosarcoma is extremely rare tumor. We report a case with adrenal leiomyosarcoma. Our case was a 48-year-old man who presented with lower urinary tract symptoms. Ultrasonography and magnetic resonance imaging revealed approximately 9 cm solid mass originating from right adrenal gland. He underwent right adrenalectomy. Pathology of the specimen showed histologic and immunohistochemical features of adrenal leiomyosarcoma.
Primary adrenal leiomyosarcoma is extremely rare tumor. We report a case with adrenal leiomyosarc... more Primary adrenal leiomyosarcoma is extremely rare tumor. We report a case with adrenal leiomyosarcoma. Our case was a 48-year-old man who presented with lower urinary tract symptoms. Ultrasonography and magnetic resonance imaging revealed approximately 9 cm solid mass originating from right adrenal gland. He underwent right adrenalectomy. Pathology of the specimen showed histologic and immunohistochemical features of adrenal leiomyosarcoma.
In this study we aimed to evaluate the usability of calretinin staining in the diagnosis and excl... more In this study we aimed to evaluate the usability of calretinin staining in the diagnosis and exclusion of HD in 36 rectal biopsies. Through immunohistochemical examination, in of a total of 21 pediatric patients in whom ganglion cells were detected in first rectal biopsies and in re-biopsies, ganglion cells were seen through nuclear and cytoplasmic staining. In the lamina propria and superficial submucosa, staining of nerve fibers was detected in a granular pattern in varying intensities. Out of a total of 5 biopsies (including one re-biopsy) of non-HD patients, where ganglion cells could not be seen, the nerve fibers were all stained. On the other hand, in 10 HD patients, diagnosed by a colon pull through operation, calretinin staining was not detected in any area of the rectal biopsies except for the mast cells. We conclude that calretinin immunostaining for the diagnosis of HD is an easy and reliable method for use in daily practice.
Meningiomas are one of the most common tumours to affect the central nervous system. Genetic muta... more Meningiomas are one of the most common tumours to affect the central nervous system. Genetic mutations are important in meningeal tumourigenesis, progression and prognosis. In this study, we aimed to examine the effect of 1p/19q deletion on the diagnosis and prognosis of meningioma subtypes using the fluorescence in situ hybridization (FISH) method. Twenty-four patients with meningioma were retrospectively studied. Tumour samples were obtained from 10 typical, 11 atypical and three anaplastic malignant meningiomas. The most representative tumour sections were screened for 1p/19q deletion using the FISH method. Of the 24 patients, eight were women (33.3%) and 16 (66.7%) were men. The mean age was 56.6 years. The higher-grade meningioma was usually seen in males and had a higher rate of deletion on 1p (p = 0.001). There was a statistically significant difference between the grades and the rate of deletion on 19q (p = 0.042) and between the grades and the rates of polysomy, monosomy an...
In this study we aimed to evaluate the usability of calretinin staining in the diagnosis and excl... more In this study we aimed to evaluate the usability of calretinin staining in the diagnosis and exclusion of HD in 36 rectal biopsies. Through immunohistochemical examination, in of a total of 21 pediatric patients in whom ganglion cells were detected in first rectal biopsies and in re-biopsies, ganglion cells were seen through nuclear and cytoplasmic staining. In the lamina propria and superficial submucosa, staining of nerve fibers was detected in a granular pattern in varying intensities. Out of a total of 5 biopsies (including one re-biopsy) of non-HD patients, where ganglion cells could not be seen, the nerve fibers were all stained. On the other hand, in 10 HD patients, diagnosed by a colon pull through operation, calretinin staining was not detected in any area of the rectal biopsies except for the mast cells. We conclude that calretinin immunostaining for the diagnosis of HD is an easy and reliable method for use in daily practice.
Pituitary adenomas are the third most common intracranial tumors. Invasive adenomas account for o... more Pituitary adenomas are the third most common intracranial tumors. Invasive adenomas account for only 0.1-0.2% of pituitary tumors. SPARC is a matrix glycoprotein that plays a role in progression and invasiveness of neoplasms. In this study, we examined the potential role of SPARC in invasive pituitary adenomas. Forty pituitary adenomas have been examined with histopathological and immunohistochemical techniques. The cohort has been classified into two groups as invasive (n = 25) and non-invasive (n = 15) utilizing the Hardy classification. Formalin fixed tissues have been stained with hematoxylin eosin. Ki-67, p53, and SPARC monoclonal antibodies have been used. We did not detect any significant difference on Ki-67, SPARC, and p53 expression patterns correlating with the pathological subtype or invasiveness. Only 24% of invasive adenomas had Ki-67 levels over 1%. A total of 67.7% non-invasive adenomas had Ki-67 levels below 1%. We did not detect any relation between SPARC levels and invasiveness of pituitary adenomas. Absence of significant SPARC expression in tumor progression, sellar dilatation, erosion and destruction suggest that SPARC scores are not related with invasiveness or progressiveness of pituitary adenomas.
Congenital cranial teratomas are a well-recognized but infrequent entity and are usually characte... more Congenital cranial teratomas are a well-recognized but infrequent entity and are usually characterized by complete loss of the normal intracranial architecture. They contain tissues from all three germ layers. This review presents the clinical features, diagnostic methods and management of cranial teratomas based on our experience and the literature. Material and methods: Four pathologically proven cases of congenital cranial teratomas were reviewed. One case was diagnosed prenatally, and the others were diagnosed postnatally. While CT and MRI had been performed in all patients, ultrasonography was only performed in one patient. Craniofacial mass, macrocephalus and/or hydrocephalus were the prominent findings. Localized neurological deficits were not observed even with very large tumors. In all patients, the mass was totally removed, and a ventriculoperitoneal shunt was performed in two patients who had hydrocephalus. Histological examination demonstrated a variety of tissues from a...
for approximately 0.2% of all genital tract malignancies.1 Although their incidence is approximat... more for approximately 0.2% of all genital tract malignancies.1 Although their incidence is approximately 2 per million women, the incidence of endometrial cancer is 700 per million women.2 It is composed of cells closely resembling normal proliferative endometrial stromal cells. The tumor is classified into a low-grade endometrial stromal sarcoma (LGESS) and high-grade endometrial stromal sarcoma (HGESS) based on mitotic rate. Nuclear atypia or pleomorphism is not demonstrated in LGESS which has less than 10 mitoses per 10 high-power fields (HPF). HGESS is characterized by more than 10 mitoses per 10 HPF and shows a more aggressive be-
Primary adrenal leiomyosarcoma is extremely rare tumor. We report a case with adrenal leiomyosarc... more Primary adrenal leiomyosarcoma is extremely rare tumor. We report a case with adrenal leiomyosarcoma. Our case was a 48-year-old man who presented with lower urinary tract symptoms. Ultrasonography and magnetic resonance imaging revealed approximately 9 cm solid mass originating from right adrenal gland. He underwent right adrenalectomy. Pathology of the specimen showed histologic and immunohistochemical features of adrenal leiomyosarcoma.
Primary adrenal leiomyosarcoma is extremely rare tumor. We report a case with adrenal leiomyosarc... more Primary adrenal leiomyosarcoma is extremely rare tumor. We report a case with adrenal leiomyosarcoma. Our case was a 48-year-old man who presented with lower urinary tract symptoms. Ultrasonography and magnetic resonance imaging revealed approximately 9 cm solid mass originating from right adrenal gland. He underwent right adrenalectomy. Pathology of the specimen showed histologic and immunohistochemical features of adrenal leiomyosarcoma.
In this study we aimed to evaluate the usability of calretinin staining in the diagnosis and excl... more In this study we aimed to evaluate the usability of calretinin staining in the diagnosis and exclusion of HD in 36 rectal biopsies. Through immunohistochemical examination, in of a total of 21 pediatric patients in whom ganglion cells were detected in first rectal biopsies and in re-biopsies, ganglion cells were seen through nuclear and cytoplasmic staining. In the lamina propria and superficial submucosa, staining of nerve fibers was detected in a granular pattern in varying intensities. Out of a total of 5 biopsies (including one re-biopsy) of non-HD patients, where ganglion cells could not be seen, the nerve fibers were all stained. On the other hand, in 10 HD patients, diagnosed by a colon pull through operation, calretinin staining was not detected in any area of the rectal biopsies except for the mast cells. We conclude that calretinin immunostaining for the diagnosis of HD is an easy and reliable method for use in daily practice.
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