Atrophic rhinitis is also associated with similar atrophic changes in the pharynx or larynx, producing symptoms pertaining to these structures. Hearing impairment can occur due to Eustachian tube blockage causing middle ear effusion. Etiology
Causes can be remembered by the mnemonic HERNIA:

Hereditary factors: the disease runs in  families
Endocrine imbalance: the disease tends to start at puberty and mostly involves females
Racial factors: white people are more susceptible than natives of equatorial Africa
Nutritional deficiency: vitamins A or D, or iron
Infection: Klebsiella ozaenae, diphtheroids, Proteus vulgaris, E. coli, etc. Autoimmune factors: viral infection or some other unidentified insult may trigger antigenicity of the nasal mucosa. Secondary atrophic rhinitis
Specific infections, such as syphilis, leprosy and rhinoscleroma, may cause destruction of the nasal structures leading to atrophic changes. Atrophic rhinitis can also result from long-standing purulent sinusitis or radiotherapy of the nose, or as a complication of surgery of the turbinates. The United Kingdom National Health Service has stated that "Most cases of atrophic rhinitis in the UK occur when the turbinates are damaged or removed during surgery". Some authors refer to as Atrophic rhinitis secondary to sinus surgery as the empty nose syndrome. Unilateral atrophic rhinitis
Extreme deviation of nasal septum may be accompanied by atrophic rhinitis on the wider side. Pathology
The ciliated columnar epithelium of the nasal mucosa is replaced by stratified squamous epithelium. Atrophy of mucosa, turbinal bones and seromucinous glands tends to occur, due to obliterative endarteritis and periarteritis causing decreased blood supply, hence the supplying area atrophies. Arrested development of paranasal sinuses.
A supernumerary  kidney is an additional kidney to the number usually present in an organism. This often develops as the result of splitting of the nephrogenic blastema, or from separate metanephric blastemas into which partially or completely reduplicated ureteral stalks enter to form separate capsulated kidneys; in some cases the separation of the reduplicated organ is incomplete (fused supernumerary kidney). Less than a hundred cases are known of one or two supernumerary kidneys. See also
Supernumerary body part

References
Luciano A. Favorito; Ana Raquel M. Morais (May–June 2012). "Evaluation of supernumerary kidney with fusion using magnetic resonance image". IBJU. 38 (3): 428–429. doi:10.1590/s1677-55382012000300018. PMID 22765860.