PubMed · 9851142
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M Kawakami, H Ogawa. 1998. [Signet ring cell lymphoma].. https://pubmed.ncbi.nlm.nih.gov/9851142/
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Pulmonary hypertension and cor pulmonale due to tumor emboli causing pulmonary tumor thrombotic microangiopathy (PTTM) is rare and extremely difficult diagnosis to make prior to death. Pulmonary hypertension due to metastatic tumor emboli should be included in the differential diagnosis of various causes of dyspnea in patients with a history of cancer or more common causes, including infection, thromboembolism, metastasis, adverse effects of drugs, and recurrent effusions. We describe a patient with gallbladder carcinoma who presented with progressive dyspnea and severe pulmonary hypertension. The etiology was tumor emboli and PTTM from gallbladder carcinoma, which remained elusive prior to her death despite appropriate clinical investigations and was established on autopsy. To the best of our knowledge, this is likely the second reported case of PTTM from metastatic gallbladder carcinoma.
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Linitis plastica is a malignant disease that usually occurs in the stomach, although it can affect any segment of the alimentary tract. Typically, this entity shows slow progression and insidious clinical course. We present the case of a patient with a previous diagnosis of signet ring cell cancer of the stomach that had been treated with curative intent 12 years before the clinical onset of small and large bowel linitis plastica. The diagnosis was obtained as an incidental pathological finding after urgent surgery for intestinal obstruction. No gastric mass was found. Linitis plastica should be considered in the differential diagnosis of patients with symptoms of obstruction after resection of a gastric carcinoma, especially if there are macroscopic surgical findings of circumferential narrowing. A long interval after diagnosis and treatment of the primary disease does not allow malignancy to be ruled out.