SummaryAn accessory lobe of the liver with long well defined mesentery presenting as recurrent pain in abdomen in a Hindu female is described. This is the seventh case recorded in English literature. The embryological genesis of this anomaly and the possibility of preoperative diagnosis by various techniques is discussed.
Traditionally, diffuse epithelial mesotheliomas are mainly identified at the ultrastructural level by the numerous, long, wavy-appearing surface microvilli. By electron microscopy of a series of diffuse mesotheliomas of varying subtype (epithelial, biphasic, sarcomatous, and poorly differentiated), it can be demonstrated that the differentiation of this specialized surface organelle is quite variable even in well-differentiated lesions. The presence of only a few, scattered, short microvilli does not exclude a diagnosis of epithelial mesothelioma, particularly if historical, surgical, and radiologic findings support this diagnostic conclusion. Indeed, even the complete absence of surface microvilli is compatible with a diagnosis of diffuse epithelial mesothelioma. It is important to become aware of the spectrum of tumor cell differentiation in serosal tumors, as all of the fine structural diagnostic criteria in mesotheliomas are expressed to varying degrees in individual cases.
Mesothelioma is an uncommon neoplastic condition. Its association with asbestos exposure is well established, but it occurs even in non‐industrial workers, and naturally there must be some other factors in its (Etiology than asbestos exposure. In this report, five patients with primary mesothelioma, all belonging to a rural agricultural community with no chance of any asbestos exposure, have been documented. There was one common interesting observation, in that all five patients were associated with sugar‐cane farming or an allied trade. Whether this observation is coincidental or has any (etiological bearing on mesothelioma needs further investigation. Its histopathological features, symptomatology, diagnosis, and treatment are discussed, with a brief review of the literature.
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