Bacillary angiomatosis pathology

Introduction

Bacillary angiomatosis It is caused by Rickettsia-like organismBartonella henselae.

Histology bacillary angiomatosis

Histologically, bacillary angiomatosis lesions closely resemble pyogenic granuloma. Usually ulcerated papules or nodules composed of highly vascularized lobes edematous connective tissue (Figure 1). Usually there is a mixed cell infiltrate and nuclear degenerate powder inflammatory cells. Accompanying this peculiar background are diagnostic groups of pink-purple granular material (Figure 2). This granular material consists of a large number of Bartonella (Rochalimaea) henselae gram-negative rods (Figure 3).

Special spots for bacillary angiomatosis

Warthin-Starry staining or Gram staining highlight groups of pink-purple bartonella organisms. Organisms are revealed to be gram-negative, gram stained rods (Figure 3).

Differential diagnosis bacillary angiomatosis pathology

Pyogenic granuloma: also shows an ulcerated lobe vascular proliferation and inflammatory changes. Organisms are an obvious clue. In cases of poor organisms, fragmented inflammatory cells may be an important clue and prompt additional microbiological studies.

Peruvian wart: this disease is practically indistinguishable from bacillary angiomatosis histopathologically and similar groups of bacteria It can be found. This disease occurs in Peru and some other parts of South America and is caused by an infectious agent, Bartonella bacilliformis, a relative of Bartonella henselae.