Tumor miofibroblástico inflamatorio (pseudotumor inflamatorio) ocasionando abdomen agudo / Inflammatory myofibroblastic tumor as a cause of acute abdomen

Background: Inflammatory myofibroblastic tumor (IMT) is a rare disease, usually benign, although with possible progression to malignancy. The clinical features depend on its location. If the resection is completed, surgery is curative, but recurrence is possible. The diagnosis is always histopathological. Case report: We report a 20 years old female admitted for a progressive abdominal pain lasting 24 hours. The patient was subjected to an appendectomy but in the postoperative period she continued with nausea and vomiting. The patient was operated again, finding a small bowel tumor with multiple adhesions, occluding the intestinal lumen and a Meckel diverticulum. The pathological study of the tumor reported the presence of an inflammatory myofibroblastic tumor. The patient had an uneventful postoperative outcome.

Introducción: El tumor miofibroblástico inflamatorio (TMI) es una enfermedad poco frecuente, en general benigna, aunque con posible evolución a malignidad. Las características clínicas dependen del lugar en el que esté ubicado. La cirugía es curativa siempre y cuando la resección sea total; aunque no se excluye la posibilidad de recidivas. El diagnóstico siempre es histopatológico. Dadas sus características clínicas y sitios de presentación se ha denominado de distintas formas e incluso sigue siendo motivo de estudio a fin de entender completamente su fisiopatología. Caso clínico: Presentamos un caso de esta rara entidad con un cuadro clínico de un abdomen agudo.

Inflammatory myofibroblastic tumor of the small intestine: a case report of a 2 month-old infant.

Benign intestinal tumors are rare in children; however, the authors describe an inflammatory myofibroblastic tumor (IMT) of the terminal ileum in a 2-month-old infant who presented with an intestinal obstruction. During laparotomy, an annular mass around the terminal ileum was resected, from which a histological diagnosis of IMT was made. A review of the literature for this rare condition was done to delineate the natural history of this tumor and to do a histological confirmation of its benign nature. Because of the risk of local recurrence, IMT cases should have a long-term follow up.

Inflammatory Myofibroblastic Tumor on Intercostal Nerve Presenting as Paraneoplastic Pemphigus with Fatal Pulmonary Involvement

Inflammatory myofibroblastic tumors (IMTs) are benign neoplasms that can occur at different anatomic sites with nonspecific clinical symptoms. A 48-yr-old woman presented with a 2-month history of a relapsed oral ulcer, progressive dyspnea, and a thoracic pain induced by breathing. A tumorous mass was noticed in the right costodiaphragmatic recess on chest computed tomography and magnetic resonance imaging, and the patient underwent a right costotransversectomy with excision of the tumor, which originated from the 12th intercostal nerve. Histology and immunohistochemistry showed that the tumor was an IMT of the intercostal nerve. The patient's postoperative course was not favorable; dyspnea persisted after surgery, and a progressive pulmonary compromise developed. The cause of the respiratory failure was found to be bronchiolitis obliterans, which in this case proved to be a fatal complication of paraneoplastic pemphigus associated with an IMT. This case of IMT of the spinal nerve in the paravertebral region is unique in terms of its location and presentation in combination with paraneoplastic pemphigus, which is rare. A brief review of the heterogeneous theories concerning the pathogenesis, clinicopathological features, and differential diagnosis of this disease entity is presented.

Plasma Cell Granuloma Associated with Pulmonary Actinomycosis: A Case Report

Plasma cell granuloma (PCG) of the lung is a rare disease that usually presents as a pulmonary nodule or mass on incidental radiographic examination without symptoms. Although the etiology of PCG is still controversial, many findings have lent support to the lesion being a reactive inflammatory process rather than a neoplastic one. We describe a 53-yr-old male who presented with a hemoptysis and have a lung mass at the left upper lobe on chest radiograph. The lung mass was primarily diagnosed as PCG by percutaneous needle aspiration and biopsy, and the patient was treated with oral steroid because he and relatives refused the operation. However, the size of the lung mass did not change and open thoracotomy and lobectomy were done therefore. He was confirmed as having pulmonary actinomycosis with PCG after surgery. To our knowledge, this is the first report of PCG associated with actinomycosis in Korea.

A Case of Hepatic Inflammatory Pseudotumor Developed with Peripheral Cholangiocarcinoma / 대한소화기학회지

Inflammatory pseudotumor is an uncommon mass which develops most frequently in the lung of young adults. It is characterized by localized fibrous proliferations with chronic inflammatory cell infiltration. Due to its rarity and similarity in radiologic appearance with malignant hepatic tumors, hepatic inflammatory pseudotumor (HIPT) is often misdiagnosed and resected accidentally. We report a case of HIPT which was unnecessarily resected due to synchronous small peripheral cholangiocarcinoma located on the other segment of liver.

Intracranial plasma cell granuloma.

We report two rare cases of primary intracranial plasma cell granuloma. The tumors probably arose from the dura and involved the cerebral parenchyma. These patients presented with clinical features of raised intracranial pressure and there was focal neurological deficit. The management issues are discussed.

Inflammatory pseudotumor of the spleen concomitant with renal cell carcinoma: case report

CONTEXTO: Pseudotumor inflamatório é uma lesão benigna rara que pode se desenvolver em uma grande variedade de órgãos. Sua grande importância na prática médica reside na enorme dificuldade de distingui-lo tanto clinicamente quanto radiologicamente de condições malignas. RELATO DE CASO: Os autores relatam um caso de pseudotumor envolvendo o baço e apresentando-se concomitantemente a um carcinoma renal de células claras. Apesar da semelhança macroscópica a tumores malignos, as características inflamatórias do pseudotumor são facilmente evidenciadas à microscopia. Apesar de hipóteses terem sido formuladas, os mecanismos patogenéticos relacionados ao pseudotumor ainda não estão bem estabelecidos.

Recurrent inflammatory pseudotumor of small bowel mesentery presenting as perforative peritonitis.

A 62-year-old man with recurrent inflammatory pseudotumor of the small bowel mesentery presented with perforative peritonitis; such a presentation has not been reported. The mass was excised successfully.

Fever of Unknown Origin as a Presentation of Gastric Inflammatory Myofibroblastic Tumor in a Two-Year-Old Boy

Gastric inflammatory myofibroblastic tumor (IMT) is an extremely rare lesion with mimicking malignant features and accompanied with various clinical manifestations. Here we present a 2-yr-old boy who had a gastric IMT with a huge extragastric mass, which closely resembled a neuroblastoma on imaging studies. He experienced intermittent fever and poor appetite for 6 weeks. Fever remained up to 38degrees C even on the operation day. He underwent partial gastrectomy and distal pancreatectomy with splenectomy including the tumor. The preoperative fever disappeared and did not recur in the postoperative course.

Pseudotumor Inflamatorio Como Causa de Fiebre Prolongadaa: Presentación de un Caso y Revisión de la Literatura / Inflamatory pseudotumor as cause of prolonged fever, report of a case and revision of litterature

El pseudotumor inflamatorio es una lesión tumoral poco común en niños, rara vez reportada en nuestro medio, informado en la literatura bajo una variedad de términos debido a sus diversos componentes histológicos. La localización más común es un pulmón, aunque se ha informado en otros sitios anatómicos, como retroperitoneo. La presentación clínica varía de acuerdo al sito de origen, siendo constante la fiebre, la anemia hipocrómica microcítica y la pérdida de peso. Se reporta el caso de un niño de site años de edad, que presentó inicialmente un cuadro de fiebre prolongada, anemia hipocrómica microcítica, pérdida de peso y después de halló una masa retroperitoneal en el hilio esplénico, correspondiente histológicamente a un pseudotumor inflamatorio. El tratamiento es la resección quirúrgica completa de la masa, aunque se han utilizado los corticoides, radioterapia y quimioterapia. La malignidad del pseudotumor inflamatorio no ha sido demostrada, aún cuando han sido informados cambios clonales en algunos casos. Se desconoce su real incidencia en nuestro medio