Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0085693 (acute appendicitis)
 3,606 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A case of primary T-cell lymphoma of the appendix in an 84-year-old female was reported. Appendectomy was performed as a result of the clinical diagnosis of acute appendicitis, due to the rebound tenderness of McBurney's point and thickness of the appendix wall as determined from ultra echo sonograph. Grossly, the surgical resected appendix did not have a dominant inflammatory appearance, therefore a tumor was suspected. Microscopic examination showed diffused proliferation of large and medium size lymphoma cells. Immunohistochemical examination further revealed that the lymphoma cells were positive for T-cell markers. To ensure this was a T-cell lymphoma, molecular examination was performed using paraffin-embedded tissue sections, since T-cell lymphoma of the appendix is extremely rare. Polymerase chain reaction (PCR) single-strand conformation polymorphism (SSCP) analysis demonstrated monoclonal T-cell receptor gene rearrangement. T-cell-rich B-cell lymphoma was excluded. To our knowledge, this is the first reported case of primary T-cell lymphoma of the appendix. PCR-SSCP analysis in paraffin-embedded tissue section was very useful in the diagnosis of lymphoma cell monoclonality.
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PMID:Primary T-cell non-Hodgkin's malignant lymphoma of the appendix. 1084 17

Acute perforated appendicitis is a very rare initial presentation of appendiceal lymphoma. A case of primary lymphoma of the appendix in a 42-year-old female is reported here. The symptom was pain in the right lower quadrant of the abdomen. Surgical intervention was performed under clinical diagnosis of acute appendicitis. Grossly, the resected appendix was gangrenous and perforated. Light microscopy revealed transmural infiltration by diffuse large B-cell lymphoma with angioinvasion and tumor necrosis, resulting in perforated acute suppurative appendicitis. To the best of our knowledge, only 4 cases of well-documented primary diffuse large B-cell lymphoma of appendix have been reported in the world literature.
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PMID:Primary appendiceal lymphoma presenting as perforated acute appendicitis. 1577 87

Acute appendicitis is a clinical diagnosis typically presenting with right lower quadrant pain. We describe the case of an asymptomatic 53-year-old man with stage 2A diffuse large B-cell lymphoma, who underwent F-FDG PET/CT at the completion of chemotherapy. The scan showed complete lymphomatous disease remission. Incidentally, there was increased FDG uptake in a tubular structure adjacent to the cecum. Clinical examination was negative. Subsequently, the patient presented 6 days later with typical acute appendicitis symptoms. This case is interesting wherein increased FDG uptake in the appendix predated the appearance of clinical symptoms.
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PMID:18F-FDG PET/CT Scan Can Predate Clinical Presentation in Acute Appendicitis. 2871 43

Appendiceal lymphomas are exceedingly rare, constituting around 0.015% of all gastrointestinal lymphoma cases. Burkitt's lymphoma is the second most prevalent pathology, diagnosed in 25.9% of patients. We report a case of a 36-year-old male admitted with acute abdominal pain with 2 days of evolution, localized in the right lower quadrant associated with hyporexia, but no fever. On examination he presented abdominal tenderness on the right iliac fossa. A diagnosis of acute appendicitis was made clinically. At the post-operative follow up, 2 weeks later, he presented a low back pain of high intensity, associated with swelling of the abdomen, night sweats, daily fevers and weight loss. The histopathological exam of the appendix revealed diffuse and transmural lymphoid proliferation. Immunohistochemistry suggested high grade B-cell lymphoma indicative of Burkitt's lymphoma. This patient was staged as a IVxB lymphoma and was submitted into polychemotherapy with a complete clinical response in 8 months.
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PMID:Burkitt's lymphoma presenting as acute appendicitis: a case report. 2994 79

<strong>BACKGROUND</strong> Appendicitis is the most common cause of an acute abdomen. Approximately 1% of appendicectomies will have an incidental finding of an appendiceal neoplasm. A primary appendiceal lymphoma is extremely rare, and is found in 0.015% of all appendiceal specimens. Burkitt lymphoma is an aggressive B cell lymphoma characterized by translocation and dysregulation of the c-Myc gene. Burkitt leukemia is considered to be an alternative manifestation of the same pathology, and is defined by the presence of >25% Burkitt blasts within the bone marrow. The treatment approaches for Burkitt leukemia/lymphoma are similar. <strong>CASE REPORT</strong> A 6-year old girl presented with a history, examination, and radiological imaging consistent with acute appendicitis. An inflamed, edematous appendix was identified intraoperatively, and a cecectomy was performed. Histopathological investigations demonstrated Burkitt leukemia with isolated extra-nodal involvement of the appendix. The patient was subsequently started on a multi-agent steroid and chemotherapy regimen. A literature review was performed, identifying cases of Burkitt leukemia/lymphoma presenting as appendicitis. <strong>CONCLUSIONS</strong> This case highlights the importance of clinical vigilance and routine specimen histopathology review, and explores key management considerations associated with the incidental diagnosis of Burkitt leukemia/lymphoma.
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PMID:Burkitt Leukemia Presenting as Acute Appendicitis: A Case Report and Literature Review. 3209 18