RESUMO
Discussed is a mature cystic teratoma that was surgically removed from the left ovary, said teratoma containing lactating mammary tissue of a 30-year-old Japanese lady, primigravida and in her 36th gestation week. The tumor measuring 3 X 3 X 3 cm, was accidently found when she underwent a cesarian section. In the lactating glandular tissue of the teratoma, the application of an anti-alpha-lactalbumin serum revealed diffuse and/or reticular cytoplasmic stainings of almost all the luminal cells and secretory materials. Further, myoepitheliall cells were clearly visualized with anti-actin serum. References are made to 2 other case reports of similar tumoral tissue.
Assuntos
Mama , Coristoma/metabolismo , Cisto Dermoide/metabolismo , Leite Humano/metabolismo , Neoplasias Ovarianas/metabolismo , Actinas/análise , Adulto , Coristoma/análise , Coristoma/patologia , Cisto Dermoide/análise , Cisto Dermoide/patologia , Feminino , Humanos , Lactalbumina/análise , Lactação , Neoplasias Ovarianas/análise , Neoplasias Ovarianas/patologia , Gravidez , Complicações Neoplásicas na Gravidez/metabolismo , Complicações Neoplásicas na Gravidez/patologiaRESUMO
This article documents the eighth reported case (to our knowledge) of a phakomatous choristoma, a rare congenital tumor of the lower eyelid of infants. Among the eight cases, there was no instance of tumor recurrence recorded nor was there any detectable postoperative eye defect, despite incomplete resection of the tumor in two patients. While usually clinically diagnosed as a dermoid cyst, the highly characteristic histologic features of this entity should allow more frequent recognition. Ultrastructural examination in our case provided additional evidence of its lenticular origin.
Assuntos
Coristoma/ultraestrutura , Neoplasias Palpebrais/ultraestrutura , Cristalino , Coristoma/análise , Neoplasias Palpebrais/análise , Humanos , Imuno-Histoquímica , Lactente , MasculinoRESUMO
Heterotopic gastric mucosa in the rectum is particularly uncommon; only 23 cases have been reported to date. Moreover, no studies have been done on the neuroendocrine apparatus and glycoprotein production of the heterotopic mucosa. This study reports on a 13-year-old boy, admitted with rectal bleeding and persistent tenesmus. An ulcerative lesion was found on colonoscopy; biopsies revealed a fundic-type gastric tissue. Medical therapy (H2-blockers) promptly healed the rectal ulcer; surgical excision of the heterotopia was performed with complete and permanent relief of symptoms (3-year follow-up). Immunocytochemistry (PAP) revealed 5-Ht and somatostatin cells in the gastric-type mucosa, as in the normal human stomach. These cells also were present in the surrounding rectal epithelium where PYY-enteroglucagon cells were detected, which were absent in the heterotopic tissue. Mucin histochemistry showed PAS-positive cells also strongly stained by LA lectin in the heterotopic tissue, differentiating the rectal epithelium that remained unstained. Therefore, the morphofunctional status (endocrine cells and mucins) of the gastric heterotopia was almost identical to its orthotopic counterpart, confirming the hypothesis that endocrine cells and mucin-producing cells differentiate their metabolic products according to the anatomic and functional activity of the epithelium where they grow.
Assuntos
Coristoma/patologia , Mucosa Gástrica/patologia , Neoplasias Retais/patologia , Adolescente , Coristoma/análise , Mucosa Gástrica/análise , Peptídeos Semelhantes ao Glucagon/análise , Humanos , Técnicas Imunoenzimáticas , Lectinas , Masculino , Mucinas/análise , Neoplasias Retais/análise , Somatostatina/análiseRESUMO
The mucin profile of 24 endoscopic biopsies of heterotopic gastric mucosa (HGM) of the upper esophagus in adults and a control group of ten cases of Meckel's diverticula containing heterotopic gastric mucosa were studied with two combined histochemical methods: alcian blue pH 2.5/PAS and high iron diamine/alcian blue pH 2.5. The clinical and light microscopic features of the 24 HGM cases were also reviewed. In addition to overall secretion of neutral mucins by the 24 HGM cases, mucin histochemistry showed prominent secretion of acidic mucins in 19 of 24 HGM cases (79%), with sulphomucins in 11 of 24 HGM cases (45.8%). This mucin profile of HGM was unlike that of either normal gastric mucosa or heterotopic gastric mucosa in Meckel's diverticula. Moreover, a comparison between the mucin profile and clinical features of HGM and Barrett's esophagus showed certain similarities. The data suggest a physiopathologic link between HGM and Barrett's esophagus.
Assuntos
Coristoma/patologia , Neoplasias Esofágicas/patologia , Mucosa Gástrica , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Esôfago de Barrett/patologia , Coristoma/análise , Neoplasias Esofágicas/análise , Feminino , Mucosa Gástrica/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Mucinas/análiseRESUMO
Histopathological classification of gastric aberrant pancreas has been done by Heinrich's criteria. However in some case it was difficult to detect incomplete Langerhans' island consisting of several endocrine cells or a single endocrine cell by usual H-E staining. To identify the distribution of incomplete Langerhans' islands and endocrine cells, we applied an enzyme antibody method utilizing PAP method for 7 cases of gastric aberrant pancreas. It became easy to identify the endocrine cells such as single cell and islet cells by using the PAP method. In all 3 cases of aberrant pancreas classified as Heinrich type II and one of 2 case of type III, Langerhans' islands or endocrine small cell groups and single cells were found. The PAP staining method was useful to determine the Heinrich's classification of the aberrant pancreas.
Assuntos
Coristoma/patologia , Ilhotas Pancreáticas , Neoplasias Gástricas/patologia , Adulto , Idoso , Coristoma/análise , Feminino , Glucagon/análise , Humanos , Técnicas Imunoenzimáticas , Insulina/análise , Ilhotas Pancreáticas/análise , Masculino , Pessoa de Meia-Idade , Somatostatina/análise , Neoplasias Gástricas/análiseRESUMO
A case of a follicular tumor in the sellar region is described without evidence of a primary tumor within the thyroid gland or at a site known to harbor ectopic thyroid tissue. Large amounts of thyroglobulin were readily demonstrated mainly within the colloid of the follicles. The possible development from heterotopic thyroid tissue at this unusual site is discussed.
Assuntos
Carcinoma/patologia , Coristoma/patologia , Sela Túrcica , Neoplasias Cranianas/patologia , Glândula Tireoide , Neoplasias da Glândula Tireoide , Idoso , Carcinoma/análise , Coristoma/análise , Feminino , Histocitoquímica , Humanos , Neoplasias Cranianas/análise , Tireoglobulina/análiseRESUMO
A subcutaneous nodule composed of heterotopic glial tissue is reported. The lesion was present in the subcutaneous tissue of the chest wall in a 2-year-old female. Histologically it was composed of loosely textured fibrillary neuroglial tissue in a densely hyalinized collagenous stroma. Immunohistochemical staining for glial fibrillary acidic protein was positive. The possible origin of this soft tissue glial heterotopia is discussed and the subject of heterotopic glial tissue is reviewed.
Assuntos
Coristoma/patologia , Neuroglia , Neoplasias de Tecidos Moles/patologia , Neoplasias Torácicas/patologia , Axila , Pré-Escolar , Coristoma/análise , Feminino , Proteína Glial Fibrilar Ácida/análise , Histocitoquímica , Humanos , Técnicas Imunoenzimáticas , Neoplasias de Tecidos Moles/análise , Neoplasias Torácicas/análiseRESUMO
We have found 20 cases of ectopic gastric mucosa in the proximal esophagus. Five patients had symptoms, usually a burning sensation in the neck and/or dysphagia. We report the results of immunoperoxidase staining of this tissue for gastrin, somatostatin, vasoactive intestinal peptide, and bombesin. In 85% of biopsy specimens tested, one or more polypeptides were present. Gastrin and bombesin were found more frequently in symptomatic patients, and somatostatin in asymptomatic patients. Chronic inflammatory changes were more frequent in symptomatic patients.
Assuntos
Coristoma/patologia , Neoplasias Esofágicas/patologia , Mucosa Gástrica , Biópsia , Bombesina/análise , Coristoma/análise , Neoplasias Esofágicas/análise , Feminino , Gastrinas/análise , Humanos , Técnicas Imunoenzimáticas , Masculino , Pessoa de Meia-Idade , Somatostatina/análise , Peptídeo Intestinal Vasoativo/análiseAssuntos
Transplante das Ilhotas Pancreáticas , Rim , Baço , Transplante Autólogo/métodos , Animais , Glicemia/metabolismo , Coristoma/análise , Diabetes Mellitus Experimental/cirurgia , Cães , Teste de Tolerância a Glucose , Insulina/análise , Rim/citologia , Colagenase Microbiana , Pancreatectomia , Baço/citologiaRESUMO
Adenocarcinoma originating in a focus of mammary tissue in the vulva is an extremely rare occurrence. Only three such cases have been reported in the literature. Herein, the fourth example of a primary cancer developing in vulvar mammary tissue is described. Extension to regional lymph nodes is documented, as well as the presence of estrogen receptors in this tumor. Immunohistochemical evidence is rendered supporting an origin from mammary anlage.
Assuntos
Adenocarcinoma/patologia , Mama , Coristoma/patologia , Neoplasias Vulvares/patologia , Adenocarcinoma/análise , Idoso , Coristoma/análise , Feminino , Humanos , Receptores de Estrogênio/análise , Receptores de Progesterona/análise , Neoplasias Vulvares/análiseAssuntos
Coristoma/ultraestrutura , Meato Acústico Externo , Neoplasias da Orelha/ultraestrutura , Adulto , Coristoma/análise , Coristoma/complicações , Síndrome de Cushing/complicações , Neoplasias da Orelha/análise , Neoplasias da Orelha/complicações , Feminino , Humanos , Microscopia Eletrônica de Varredura , Síndrome de Peutz-Jeghers/complicaçõesRESUMO
2 cases of supernumerary breast tissue in the vulva observed in pregnant women are reported. The mammary tissue showed histological features typical of the lactating breast and immunohistochemical evidence of milk protein production.