• Title/Summary/Keyword: mucocyst

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Akashiwo sanguinea (Dinophyceae) extruding mucous from pores on the cell surface

  • Badylak, Susan;Phlips, Edward J.;Mathews, A. Loren;Kelley, Karen
    • ALGAE
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    • v.29 no.3
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    • pp.197-201
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    • 2014
  • This is the first recorded observation of Akashiwo sanguinea excreting mucilaginous substances from pores on the cell surface. Observations were from samples collected in the Caloosahatchee Estuary, Florida, USA during a bloom event, with densities of 672 cells $mL^{-1}$ of A. sanguinea, including 51 cells surrounded by mucous. Scanning electron microscopy observations revealed that the mucous was secreted from thecal pores on the cell surface. The potential significance of mucous production is discussed.

Sialolithiasis of minor salivary gland: a challenging diagnostic dilemma

  • Matiakis, Apostolos;Tzermpos, Fotios
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.47 no.2
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    • pp.145-148
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    • 2021
  • Minor salivary gland sialolithiasis (MSGS) is a not uncommon oral mucosal disease. Its clinical appearance may mimic a mucocyst or other benign submucosal overgrowth. Stasis of saliva, which accompanies MSGS, usually results in minor salivary gland inflammation, with a chronic sialadenitis appearance. MSGS typically is a painless lesion but can become painful when the salivary gland parenchyma or excretory duct becomes infected, with or without pus. However, misdiagnosis of this condition is rather common, as the clinical appearance is asymptomatic. The most common location is the upper lip, and MSGS affects males and females, with a slight predilection for males. The sialolith causing MSGS may be obvious during surgical excision, as in the case reported. In other cases, sialolith may be absent or fragmented. Differential diagnosis includes mucocele, swelling due to local irritation like fibroma and diapneusia, chronic abscess of the oral mucosa, and neoplasms either benign (lymphangioma, pleiomorphic adenoma) or malignant. Histopathological examination is needed to establish clinical diagnosis.