Histology was performed, which showed a
unilocular cyst, lined by pseudostratified ciliated columnar epithelium, with a discoloured wall showing no submucosa (Figure 4).
They exhibit either a
unilocular cyst (Figure 15) or a multilocular microcystic pattern.
On cut section, it was a
unilocular cyst. The specimen was processed routinely and stained with haematoxylin and eosin (H and E).
Unilocular cyst is considered to be initial stage in development of parasite.
The infection occurs most commonly by Echinococcus granulosus presenting as
unilocular cyst and less commonly by Echinococcus multilocularis presenting as multilocular cyst.
In the present case ultrasound scan done by a consultant radiologist showed a large
unilocular cyst in the spleen and lung C.T Scan, added to the diagnostic accuracy by showing size, shape and extent of the lesion Surgery remains the standard treatment, however, pre and postoperative 1 month course of tab albendazole should be considered in order to sterilize the cyst and reduce the chances of anaphylaxis and tension in the cyst wall.
During surgery, a
unilocular cyst adherent to the urethral wall on the right side was appreciated.
On histopathological examination there is well demarcated
unilocular cyst lined by double layer of cuboidal cells which suggests eccrine hidrocystoma.
Cut section showed
unilocular cyst. Wall of the cyst was thin, opaque and grey white in colour.
(1) In the early 2000s, studies showed that
unilocular cysts were at very low risk for malignancy, and surveillance was recommended.
However, in the case of mucinous borderline tumors,
unilocular cysts are common.
As an alternative to total surgical excision, percutaneous drainage is successful particularly in pediatric patients with
unilocular cysts and cysts larger than 5 cm in diameter.
