Mimicry of Minute Pulmonary Meningothelial-like Nodules to Metastatic Deposits in a Patient with Infiltrating Lobular Carcinoma: A Case Report and Review of the Literature

Minute pulmonary meningothelial-like nodules (MPMNs) are incidentally found lesions in lung resection specimens and autopsies. MPMNs have been associated with neoplastic and non-neoplastic pulmonary conditions and occasionally with extrapulmonary diseases. We report a case of a female patient presenting with invasive lobular carcinoma of the breast and MPMNs, masquerading as metastatic deposits. We describe the morphological, immunohistochemical and ultrastructural features of MPMNs and emphasize the importance of their recognition for proper staging and treatment of patients. To our knowledge, this is the first case in the English literature describing this coexistence.

A importância da embolização pré-operatória no tratamento do tumor do corpo carotídeo: relato de caso e revisão da literatura / The importance of preoperative embolization for the treatment of the carotid body tumor: case report and review of the literature

Os tumores do corpo carotídeo são neoplasias raras, que se originam dos pequenos órgãos quimio e barorreceptores localizados na adventícia da bifurcação da artéria carótida comum. Constituem-se uma doença de grande interesse para o cirurgião vascular, na medida em que crescem aderidos à adventícia dos vasos que compõem essa bifurcação. Por isso, sua cirurgia requer não só o conhecimento anatômico da região, mas também perfeito reconhecimento das técnicas de reconstrução vascular. Representam um problema especial quanto a seu manejo, devido à sua rica vascularização e intimidade com estruturas nobres da região cervical, como nervos e grandes vasos. Neste caso, apresentamos um homem com um tumor de corpo carotídeo aderido à carótida direita, diagnosticado por punção biópsia e tratado em dois tempos, sendo o primeiro por tratamento endovascular, realizando embolização percutânea do tumor, e, no segundo, a ressecção cirúrgica do mesmo, o que evidencia o tratamento combinado, segundo atual literatura.

Carotid body tumors are rare neoplasms originating from the small chemo- and baroreceptors located in the adventitia of the common carotid artery bifurcation. They are a disease of great interest for vascular surgeons, given that they grow adhered to the adventitia of vessels comprising this bifurcation. For that, their surgery requires not only anatomical knowledge of the region, but also perfect familiarization with vascular repair techniques. Carotid body tumors are a particular problem as to their management, due to rich vascularization and intimacy with important structures of the cervical region, such as nerves and large vessels. We report on a male patient with carotid body tumor adhered to the right carotid artery, diagnosed by puncture biopsy and treated at two different time periods: first by endovascular treatment, with percutaneous embolization of the tumor; and later by surgical resection, which represents the combined treatment suggested in the current literature.

Anesthetic Management for Carotid Artery Surgery with a Temporary Indwelling Shunt / 대한마취과학회지

A 24 years old female patient presented for surgical resection of a large chemodectoma with extensive involvement of the bifurcation of the left common carotid artery. Anesthesia was induced with thiopental and maintained with 0.75~1.25% halothane with 50% nitrous oxide in oxygen. Arterial blood pressure and carbon dioxide tension were maintained at preoperative levels with a direct arterial pressure monitoring device and an ABM end-tidal carbon dioxide monitoring device. Thiopental was infused continuously by a microinfusion pump(2mg/kg/hr) during the procedure and an intraluminal shunt was inserted in the left internal carotid artery to protect the brain form hypoxic attack. Body temperature was monitored and electrocardiography and electroencephalography were also applied. No significant changes in vital signs and electroencephalgraphy during anesthesia were noted with the exception of a temporary decreas in blood pressure due to bleeding from the accidental perforation of the left internal carotid artery. The patient responded soon after the withdrawal of anesthesia and she was discharged from hospital with an uneventful recovery on the seventh postoperative day. A reduction in cerebral blood flow without a concomitant reduction in cerebral metabolic rate during carotid arterial procedures may result in significant neurologic derangements. Therefore, the major role of the anesthesiologist is the maintenance of adequate oxygen delivery to the brain and the reduction of cerebral metabolic demands.