INTRODUCTION A solitary primary hydatid cyst in the subcutaneous abdominal wall is an exceptional entity, even in countries where the Echinococcus infestation is endemic. CASE PRESENTATION We report a case of a 70-year-old Caucasian woman who presented to our hospital with a subcutaneous mass in the para-umbilical area with a non-specific clinical presentation. The diagnosis of subcutaneous h...

INTRODUCTION Rathke's cleft cysts are cystic sellar and suprasellar lesions, characteristically lined by a single layer of ciliated cuboidal or columnar epithelium. CLINICAL PICTURE We report 2 patients who presented with gastrointestinal symptoms and were initially investigated for dyspepsia. However, attention was subsequently drawn to persistent hyponatraemia that led to the diagnosis of p...

The computed tomographic (CT) and pathologic findings in three cases of intraand suprasellar epithelial cysts (symptomatic Rathke cleft cysts) are described. Literature review revealed that the characteristic CT finding is an intra sellar and/or suprasellar low-density mass that mayor may not be enhanced. The enhancement is ringlike or capsular in nature. Whether the cyst wall is enhanced or no...

Background: In this case we describe the rare and not previously documented presentation of cystitis cystica as a large solitary cystic lesion within the bladder wall. Case Presentation: We present a case of a 46-year-old Russian male with a history of lower urinary tract symptoms and suprapubic pain. CT urogram showed a 5.8 cm filling defect/cystic mass related to the base of the bladder and p...

Echinococcus is endemic in some parts of the world but cardiac involvement with hydatid cyst is rare. Here, we report a 55-year-old man who developed right ulnar fracture and was scheduled for surgery. During routine preoperative evaluation abnormal findings in ECG were found. In echocardiography, a large mass was detected in the inferior wall of the left ventricle. Coronary angiography showed ...

Dear Editor, Two cases with epiphora and medial canthal mass showed a cyst within the lacrimal sac that compressed the lacrimal drainage system. We describe a new lacrimal sac anomaly of lacrimal intrasaccal cyst, which has not yet been reported. A 31-year-old woman was referred for epiphora in her left eye for 17 years. She also presented with a 10-year history of a palpable mass below the med...

The infectious and diagnostic stage of Giardia lamblia (also known as G. intestinalis or G. duodenalis) is the cyst. The Giardia cyst wall contains fibrils of a unique beta-1,3-linked N-acetylgalactosamine (GalNAc) homopolymer and at least three cyst wall proteins (CWPs) composed of Leu-rich repeats (CWP(LRR)) and a C-terminal conserved Cys-rich region (CWP(CRR)). Our goals were to dissect the ...

Some protozoans are able to encyst as a protective response to a harmful environment. The cyst wall usually contains chitin as its main structural constituent. Acanthamoeba is an exception since its cyst wall contains cellulose. Specific cytochemical differentiation between cellulose and chitin by microscopy has not been possible due to the similarity of the constituent beta-1,4-linked hexose b...

DERMOID cysts are most commonly found at the upper and outer angle of the orbit (Wolff, 1951). They are smooth, round or hour-glass shaped, and vary in size from a pea to a large orange. They may be differentiated from a cephalocele by their tenseness and incompressibility and the absence of cerebral symptoms (Duke-Elder, 1964). They contain secretions of the sweat and sebaceous glands and cast...

Encysting cells of Acanthamoeba castellanii, Neff strain, have been examined with the electron microscope. The wall structure and cytoplasmic changes during encystment are described. The cyst wall is composed of two major layers: a laminar, fibrous exocyst with a variable amount of matrix material, and an endocyst of fine fibrils in a granular matrix. The two layers are normally separated by a ...