Extramedullary plasmocytoma associated with a massive deposit of amyloid in the duodenum.

We report a rare case of extramedullary plasmocytoma associated with a massive deposit of amyloid in the duodenum. A 72-year-old Japanese man was admitted to our hospital presenting with a 3-mo history of epigastric pain, vomiting and weight loss. On computed tomography (CT) a wall thickening of the fourth part of the duodenum was observed.

[Vitiligoid hypopigmented macules and tumor of the follicular infundibulum].

Tumor of the follicular infundibulum is an uncommon cutaneous lesion with different forms of clinical presentation, namely solitary and multiple/eruptive variants. The former shows predilection for head and neck and presents as a papulonodular scaly tumor. The latter is less frequent and occurs on facial, neck and upper chest areas as brown, reddish or more commonly hypopigmented macules leading to the differential diagnosis with vitiligo.

[Parasitic infection of the appendix and its possible relationship to acute appendicitis].

From 1,600 surgically removed appendices, 24 (1.5%) were found to have helminths. Enterobius vermicularis was observed in 23 of the 24 specimens (95.

Parasitic infection of the appendix as a cause of acute appendicitis.

The association between parasitic infection of the appendix and acute appendicitis has been widely investigated. The aim of this retrospective study was to evaluate the prevalence of parasitic infection of the appendix in a tropical area at southeast Brazil and to assess its possible relation to acute appendicitis in surgically removed appendices. Of the 1,600 appendectomies performed during a 10-year period, 24 (1.

Appendiceal taeniasis presenting like acute appendicitis.

A case of parasitic appendicitis caused by Taenia sp. in a 28-year-old woman from Brazil is reported. Histopathological data and a description of the helminthe found in the appendix lumen are presented.