Gross pathology image showing<unk>  with honeycombing: Prominent honeycombing is present in the lower lobes accompanied by fibrosis and some honeycombing in the upper lungs. Honeycombing consists of cystically dilated airways separated by scar tissue resembling the honeycomb of bees. It is a nonspecific end stage of many types of interstitial lung disease. The disease can remit spontaneously or become chronic, with exacerbations and remissions. In some cases, it can progress to pulmonary fibrosis and death. In benign cases, remission can occur in 24 to 36 months without treatment but regular follow ups are required. Some cases, however, may persist several decades. Two-thirds of people with the condition achieve a remission within 10 years of the diagnosis. When the heart is involved, the prognosis is generally less favourable, though corticosteroids appear effective in improving AV conduction. The prognosis tends to be less favourable in African Americans than in white Americans. In a Swedish population-based analysis, the majority of cases who did not have severe disease at diagnosis had comparable mortality to the general population. The risk for premature death was markedly (2.3-fold) increased compared to the general population for a smaller group of cases with severe disease at diagnosis. Serious infections, sometimes multiple during the course of disease, and heart failure might contribute to the higher risk of early death in some patients with<unk> . Some 1990s studies indicated that people with<unk>  appear to be at significantly increased risk for cancer, in particular lung cancer, lymphomas, and cancer in other organs known to be affected in<unk> . In<unk> -lymphoma syndrome,<unk>  is followed by the development of a lymphoproliferative disorder such as non-Hodgkin lymphoma. This may be attributed to the underlying immunological abnormalities that occur during the<unk>  disease process.<unk>  can also follow cancer or occur concurrently with cancer. There have been reports of hairy cell leukemia, acute myeloid leukemia, and acute myeloblastic leukemia associated with<unk> . Sometimes,<unk> , even untreated, can be complicated by opportunistic infections although these are rare.
Sarcoidosis
Cat-scratch disease
Melioidosis
Tuberculosis
Gamasoidosis
Sporotrichosis
Milk-alkali syndrome
Amyloidosis